Additional Proxy Soliciting Materials - Form DEFA14A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934 (Amendment No. )

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☐	Definitive Additional Materials

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[The following communication was made available by Air Transport Services Group, Inc. to its employees.]

Dear Team,

Today marks a pivotal and exciting milestone for Air Transport Services Group (ATSG): we have entered into a definitive agreement to be acquired by Stonepeak, a leading alternative investment firm with an extensive track record of supporting critical infrastructure businesses, particularly in the transportation and logistics sector. Together, we look forward to a future that will drive even greater growth, inspire innovation, and generate increased value for our employees, customers, and shareholders.

Stonepeak approaches its investments with a long-term mindset and considers themselves to be partners with, not purely owners of, the businesses in which they invest. Furthermore, Stonepeak's commitment to quality, accountability, and sustainability aligns deeply with our mission at ATSG: One Team, One Mission, Be the Best. As a recognized leader in advancing the global supply chain, Stonepeak sees the potential to elevate ATSG's capabilities as a private company while enabling us to accelerate our own vision globally.

Our focus at ATSG remains steadfast: delivering industry-leading service to our customers through our Lease+Plus portfolio of companies. Our strong customer relationships, unwavering commitment to safety, daily service, and dedication to meeting market demands continue to support our exceptional global growth.

We believe this transaction represents the best path forward to create lasting value. We will be holding Town Hall meetings over the next couple of days where you will have opportunities to learn more about the transaction and to ask questions. Those times and locations are listed below. For now, we want you to know that this achievement is the direct result of your dedication and hard work.

Thank you for everything you do every day for our GREAT Company. As we embrace this next chapter, we're excited to continue our growth journey with the strength and flexibility of a private company, focused on an even brighter future together.

Please join us at one of the following townhall meetings:

Monday, November 4

1:00 pm	LGSTX	Property Maintenance Breakroom
1:45 pm	AMES	CRO Breakroom
2:30 pm	AMES	1005 Breakroom first floor
3:15 pm	Building 2	Flight Ops Open Area
4:00 pm	Admin Floor 2	Open Area in Accounting/IT
4:30 pm	Admin Floor 1	Open Area In ATI Main Hallway
5:15 pm	AMES	1006 Breakroom

Tuesday, November 5

6:30 am	AMES	1005 Breakroom
7:00 am	Building 2	Flight Ops Open Area

Sincerely,
Mike Berger

Cautionary Statement Regarding Forward-Looking Statements

This communication contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 (the "Act"). Except for historical information contained in this communication, the matters discussed herein contain forward-looking statements that involve risks and uncertainties. Such statements are provided under the "safe harbor" protection of the Act. Forward-looking statements include, but are not limited to, statements regarding anticipated operating results, prospects and aircraft in service, technological developments, economic trends, expected transactions and similar matters. The words "may," "believe," "expect," "anticipate," "target," "goal," "project," "estimate," "guidance," "forecast," "outlook," "will," "continue," "likely," "should," "hope," "seek," "plan," "intend" and variations of such words and similar expressions identify forward-looking statements. Similarly, descriptions of the Company's objectives, strategies, plans, goals or targets are also forward-looking statements. Forward-looking statements are susceptible to a number of risks, uncertainties and other factors. While the Company believes that the assumptions underlying its forward-looking statements are reasonable, investors are cautioned that any of the assumptions could prove to be inaccurate and, accordingly, the Company's actual results and experiences could differ materially from the anticipated results or other expectations expressed in its forward-looking statements.

Forward-looking statements by their nature address matters that are, to different degrees, uncertain, such as statements regarding the transactions contemplated by the Agreement and Plan of Merger, by and among the Company, Stonepeak Nile Parent LLC and Stonepeak Nile MergerCo Inc. (the "Transaction"), including the expected time period to consummate the Transaction, the anticipated benefits (including synergies) of the Transaction and integration and transition plans, opportunities, anticipated future performance, expected share buyback programs and expected dividends. All such forward-looking statements are based upon current plans, estimates, expectations and ambitions that are subject to risks, uncertainties and assumptions, many of which are beyond the control of Air Transport Services Group, Inc. (the "Company"), that could cause actual results to differ materially from those expressed in such forward-looking statements. Key factors that could cause actual results to differ materially include, but are not limited to, the expected timing and likelihood of completion of the Transaction, including the timing, receipt and terms and conditions of any required governmental and regulatory approvals of the Transaction; the occurrence of any event, change or other circumstances that could give rise to the termination of the definitive agreement; the possibility that the Company's stockholders may not approve the Transaction; the risk that the anticipated tax treatment of the Transaction is not obtained; the risk that the parties may not be able to satisfy the conditions to the Transaction in a timely manner or at all; risks related to disruption of management time from ongoing business operations due to the Transaction; the risk that any announcements relating to the Transaction could have adverse effects on the market price of the Company's common stock; the risk that the Transaction and its announcement could have an adverse effect on the parties' business relationships and business generally, including the ability of the Company to retain customers and retain and hire key personnel and maintain relationships with their suppliers and customers, and on their operating results and businesses generally; the risk of unforeseen or unknown liabilities; customer, shareholder, regulatory and other stakeholder approvals and support; the risk of unexpected future capital expenditures; the risk of potential litigation relating to the Transaction that could be instituted against the Company or its directors and/or officers; the risk associated with third party contracts containing material consent, anti-assignment, transfer or other provisions that may be related to the Transaction which are not waived or otherwise satisfactorily resolved; the risk of rating agency actions and the Company's ability to access short- and long-term debt markets on a timely and affordable basis; the risk of various events that could disrupt operations, including severe weather, such as droughts, floods, avalanches and earthquakes, cybersecurity attacks, security threats and governmental response to them, and technological changes; the risks of labor disputes, changes in labor costs and labor difficulties; and the risks resulting from other effects of industry, market, economic, legal or legislative, political or regulatory conditions outside of the Company's control. All such factors are difficult to predict and are beyond our control, including those detailed in the Company's annual report on Form 10-K for the fiscal year ended December 31, 2023 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm), quarterly reports on Form 10-Q and other documents subsequently filed by the Company with the Securities Exchange Commission ("SEC") and that are available on the Company's website at https://www.atsginc.com/investors/reports-and-filings/sec-filings and at https://www.sec.gov/edgar/browse/?CIK=894081&owner=exclude. The Company's forward-looking statements are based on assumptions that the Company believes to be reasonable but that may not prove to be accurate. Other unpredictable or factors not discussed in this communication could also have material adverse effects on forward-looking statements. The Company does not assume an obligation to update any forward-looking statements, except as required by applicable law. These forward-looking statements speak only as of the date hereof.

Additional Information and Where to Find It

In connection with the Transaction, the Company will file with the SEC a proxy statement on Schedule 14A (the "Proxy Statement"). The definitive version of the Proxy Statement will be sent to the stockholders of the Company seeking their approval of the Transaction and other related matters.

INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE PROXY STATEMENT ON SCHEDULE 14A WHEN IT BECOMES AVAILABLE, AS WELL AS ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC IN CONNECTION WITH THE TRANSACTION OR INCORPORATED BY REFERENCE THEREIN AND ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION REGARDING THE COMPANY, THE TRANSACTION AND RELATED MATTERS.

Investors and security holders may obtain free copies of these documents, including the Proxy Statement, and other documents filed with the SEC by the Company through the website maintained by the SEC at https://www.sec.gov/edgar/browse/?CIK=894081&owner=exclude. Copies of documents filed with the SEC by the Company will be made available free of charge by accessing the Company's website at https://atsginc.com/investors or by contacting the Company via email by sending a message to [email protected].

Participants in the Solicitation

The Company and its directors and executive officers may be deemed to be participants in the solicitation of proxies from the stockholders of the Company in connection with the Transaction under the rules of the SEC. Information about the interests of the directors and executive officers of the Company and other persons who may be deemed to be participants in the solicitation of stockholders of the Company in connection with the Transaction and a description of their direct and indirect interests, by security holdings or otherwise, will be included in the Proxy Statement related to the Transaction, which will be filed with the SEC. Information about the directors and executive officers of the Company and their ownership of the Company common stock is also set forth in the Company's definitive proxy statement in connection with its 2024 Annual Meeting of Stockholders, as filed with the SEC on April 11, 2024 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000114036124019362/ny20017081x1_def14a.htm) and in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2023 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm). Information about the directors and executive officers of the Company, their ownership of the Company common stock, and the Company's transactions with related persons is set forth in the sections entitled "Directors, Executive Officers and Corporate Governance," "Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters," and "Certain Relationships and Related Stockholder Matters" included in the Company's annual report on Form 10-K for the fiscal year ended December 31, 2023, which was filed with the SEC on February 29, 2024 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm), and in the sections entitled "Corporate Governance and Board Matters," and "Stock Ownership of Management," included in the Company's definitive proxy statement in connection with its 2024 Annual Meeting of Stockholders, as filed with the SEC on April 11, 2024 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm). Additional information regarding the interests of such participants in the solicitation of proxies in respect of the Transaction will be included in the Proxy Statement and other relevant materials to be filed with the SEC when they become available These documents can be obtained free of charge from the SEC's website at www.sec.gov.

No Offer or Solicitation

This communication is not intended to and shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy any securities or the solicitation of any vote of approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended.

[The following communication was made available by Air Transport Services Group, Inc. to its partners and suppliers]

ATSG Transaction Partner / Supplier Courtesy Note

Subject: An Exciting New Chapter for ATSG

Dear [ ],

I am reaching out with exciting news about ATSG's future.

Today we announced that ATSG has entered into an agreement to be acquired by Stonepeak, a leading alternative investment firm with an extensive track record of supporting critical infrastructure businesses, particularly in the transportation and logistics sector. Upon completion of the transaction, ATSG will become a privately held company well positioned to further expand our global presence in the air cargo leasing market and enhance our service offerings to customers. You can read more about it in our press release here.

It is important to keep in mind that today's announcement is just the first step. We will continue to work with you as we always have. Importantly, while our ownership will change as a result of this transaction, our commitment to working with our valued partners and suppliers remains the same.

Please let me know if you'd like to set up a time to further discuss this news in additional detail. I'd be happy to coordinate schedules for a call in the coming days.

On behalf of the ATSG team, thank you for your continued partnership and support.

Sincerely,

[ ]

Cautionary Statement Regarding Forward-Looking Statements

This communication contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 (the "Act"). Except for historical information contained in this communication, the matters discussed herein contain forward-looking statements that involve risks and uncertainties. Such statements are provided under the "safe harbor" protection of the Act. Forward-looking statements include, but are not limited to, statements regarding anticipated operating results, prospects and aircraft in service, technological developments, economic trends, expected transactions and similar matters. The words "may," "believe," "expect," "anticipate," "target," "goal," "project," "estimate," "guidance," "forecast," "outlook," "will," "continue," "likely," "should," "hope," "seek," "plan," "intend" and variations of such words and similar expressions identify forward-looking statements. Similarly, descriptions of the Company's objectives, strategies, plans, goals or targets are also forward-looking statements. Forward-looking statements are susceptible to a number of risks, uncertainties and other factors. While the Company believes that the assumptions underlying its forward-looking statements are reasonable, investors are cautioned that any of the assumptions could prove to be inaccurate and, accordingly, the Company's actual results and experiences could differ materially from the anticipated results or other expectations expressed in its forward-looking statements.

Forward-looking statements by their nature address matters that are, to different degrees, uncertain, such as statements regarding the transactions contemplated by the Agreement and Plan of Merger, by and among the Company, Stonepeak Nile Parent LLC and Stonepeak Nile MergerCo Inc. (the "Transaction"), including the expected time period to consummate the Transaction, the anticipated benefits (including synergies) of the Transaction and integration and transition plans, opportunities, anticipated future performance, expected share buyback programs and expected dividends. All such forward-looking statements are based upon current plans, estimates, expectations and ambitions that are subject to risks, uncertainties and assumptions, many of which are beyond the control of Air Transport Services Group, Inc. (the "Company"), that could cause actual results to differ materially from those expressed in such forward-looking statements. Key factors that could cause actual results to differ materially include, but are not limited to, the expected timing and likelihood of completion of the Transaction, including the timing, receipt and terms and conditions of any required governmental and regulatory approvals of the Transaction; the occurrence of any event, change or other circumstances that could give rise to the termination of the definitive agreement; the possibility that the Company's stockholders may not approve the Transaction; the risk that the anticipated tax treatment of the Transaction is not obtained; the risk that the parties may not be able to satisfy the conditions to the Transaction in a timely manner or at all; risks related to disruption of management time from ongoing business operations due to the Transaction; the risk that any announcements relating to the Transaction could have adverse effects on the market price of the Company's common stock; the risk that the Transaction and its announcement could have an adverse effect on the parties' business relationships and business generally, including the ability of the Company to retain customers and retain and hire key personnel and maintain relationships with their suppliers and customers, and on their operating results and businesses generally; the risk of unforeseen or unknown liabilities; customer, shareholder, regulatory and other stakeholder approvals and support; the risk of unexpected future capital expenditures; the risk of potential litigation relating to the Transaction that could be instituted against the Company or its directors and/or officers; the risk associated with third party contracts containing material consent, anti-assignment, transfer or other provisions that may be related to the Transaction which are not waived or otherwise satisfactorily resolved; the risk of rating agency actions and the Company's ability to access short- and long-term debt markets on a timely and affordable basis; the risk of various events that could disrupt operations, including severe weather, such as droughts, floods, avalanches and earthquakes, cybersecurity attacks, security threats and governmental response to them, and technological changes; the risks of labor disputes, changes in labor costs and labor difficulties; and the risks resulting from other effects of industry, market, economic, legal or legislative, political or regulatory conditions outside of the Company's control. All such factors are difficult to predict and are beyond our control, including those detailed in the Company's annual report on Form 10-K for the fiscal year ended December 31, 2023 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm), quarterly reports on Form 10-Q and other documents subsequently filed by the Company with the Securities Exchange Commission ("SEC") and that are available on the Company's website at https://www.atsginc.com/investors/reports-and-filings/sec-filings and at https://www.sec.gov/edgar/browse/?CIK=894081&owner=exclude. The Company's forward-looking statements are based on assumptions that the Company believes to be reasonable but that may not prove to be accurate. Other unpredictable or factors not discussed in this communication could also have material adverse effects on forward-looking statements. The Company does not assume an obligation to update any forward-looking statements, except as required by applicable law. These forward-looking statements speak only as of the date hereof.

Additional Information and Where to Find It

In connection with the Transaction, the Company will file with the SEC a proxy statement on Schedule 14A (the "Proxy Statement"). The definitive version of the Proxy Statement will be sent to the stockholders of the Company seeking their approval of the Transaction and other related matters.

INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE PROXY STATEMENT ON SCHEDULE 14A WHEN IT BECOMES AVAILABLE, AS WELL AS ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC IN CONNECTION WITH THE TRANSACTION OR INCORPORATED BY REFERENCE THEREIN AND ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION REGARDING THE COMPANY, THE TRANSACTION AND RELATED MATTERS.

Investors and security holders may obtain free copies of these documents, including the Proxy Statement, and other documents filed with the SEC by the Company through the website maintained by the SEC at https://www.sec.gov/edgar/browse/?CIK=894081&owner=exclude. Copies of documents filed with the SEC by the Company will be made available free of charge by accessing the Company's website at https://atsginc.com/investors or by contacting the Company via email by sending a message to [email protected].

Participants in the Solicitation

The Company and its directors and executive officers may be deemed to be participants in the solicitation of proxies from the stockholders of the Company in connection with the Transaction under the rules of the SEC. Information about the interests of the directors and executive officers of the Company and other persons who may be deemed to be participants in the solicitation of stockholders of the Company in connection with the Transaction and a description of their direct and indirect interests, by security holdings or otherwise, will be included in the Proxy Statement related to the Transaction, which will be filed with the SEC. Information about the directors and executive officers of the Company and their ownership of the Company common stock is also set forth in the Company's definitive proxy statement in connection with its 2024 Annual Meeting of Stockholders, as filed with the SEC on April 11, 2024 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000114036124019362/ny20017081x1_def14a.htm) and in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2023 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm). Information about the directors and executive officers of the Company, their ownership of the Company common stock, and the Company's transactions with related persons is set forth in the sections entitled "Directors, Executive Officers and Corporate Governance," "Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters," and "Certain Relationships and Related Stockholder Matters" included in the Company's annual report on Form 10-K for the fiscal year ended December 31, 2023, which was filed with the SEC on February 29, 2024 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm), and in the sections entitled "Corporate Governance and Board Matters," and "Stock Ownership of Management," included in the Company's definitive proxy statement in connection with its 2024 Annual Meeting of Stockholders, as filed with the SEC on April 11, 2024 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm). Additional information regarding the interests of such participants in the solicitation of proxies in respect of the Transaction will be included in the Proxy Statement and other relevant materials to be filed with the SEC when they become available These documents can be obtained free of charge from the SEC's website at www.sec.gov.

No Offer or Solicitation

This communication is not intended to and shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy any securities or the solicitation of any vote of approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended.

[The following communication was made available by Air Transport Services Group, Inc. to its customers]

ATSG Transaction Customer Courtesy Note

Subject: An Exciting New Chapter for ATSG

Dear [ ],

I am reaching out with exciting news about ATSG's future.

Today we announced that ATSG has entered into an agreement to be acquired by Stonepeak, a leading alternative investment firm with an extensive track record of supporting critical infrastructure businesses, particularly in the transportation and logistics sector. Upon completion of the transaction, ATSG will become a privately held company well positioned to further expand our global presence in the air cargo leasing market and enhance our service offerings to customers. You can read more about it in our press release here.

It is important to keep in mind that today's announcement is just the first step. We will continue to serve you as we always have. Importantly, while our ownership will change as a result of this transaction, our commitment to our valued customers remains the same.

Please let me know if you'd like to set up a time to further discuss this news in additional detail. I'd be happy to coordinate schedules for a call in the coming days.

On behalf of the ATSG team, thank you for your continued trust and support.

Sincerely,

[ ]

Cautionary Statement Regarding Forward-Looking Statements

This communication contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 (the "Act"). Except for historical information contained in this communication, the matters discussed herein contain forward-looking statements that involve risks and uncertainties. Such statements are provided under the "safe harbor" protection of the Act. Forward-looking statements include, but are not limited to, statements regarding anticipated operating results, prospects and aircraft in service, technological developments, economic trends, expected transactions and similar matters. The words "may," "believe," "expect," "anticipate," "target," "goal," "project," "estimate," "guidance," "forecast," "outlook," "will," "continue," "likely," "should," "hope," "seek," "plan," "intend" and variations of such words and similar expressions identify forward-looking statements. Similarly, descriptions of the Company's objectives, strategies, plans, goals or targets are also forward-looking statements. Forward-looking statements are susceptible to a number of risks, uncertainties and other factors. While the Company believes that the assumptions underlying its forward-looking statements are reasonable, investors are cautioned that any of the assumptions could prove to be inaccurate and, accordingly, the Company's actual results and experiences could differ materially from the anticipated results or other expectations expressed in its forward-looking statements.

Forward-looking statements by their nature address matters that are, to different degrees, uncertain, such as statements regarding the transactions contemplated by the Agreement and Plan of Merger, by and among the Company, Stonepeak Nile Parent LLC and Stonepeak Nile MergerCo Inc. (the "Transaction"), including the expected time period to consummate the Transaction, the anticipated benefits (including synergies) of the Transaction and integration and transition plans, opportunities, anticipated future performance, expected share buyback programs and expected dividends. All such forward-looking statements are based upon current plans, estimates, expectations and ambitions that are subject to risks, uncertainties and assumptions, many of which are beyond the control of Air Transport Services Group, Inc. (the "Company"), that could cause actual results to differ materially from those expressed in such forward-looking statements. Key factors that could cause actual results to differ materially include, but are not limited to, the expected timing and likelihood of completion of the Transaction, including the timing, receipt and terms and conditions of any required governmental and regulatory approvals of the Transaction; the occurrence of any event, change or other circumstances that could give rise to the termination of the definitive agreement; the possibility that the Company's stockholders may not approve the Transaction; the risk that the anticipated tax treatment of the Transaction is not obtained; the risk that the parties may not be able to satisfy the conditions to the Transaction in a timely manner or at all; risks related to disruption of management time from ongoing business operations due to the Transaction; the risk that any announcements relating to the Transaction could have adverse effects on the market price of the Company's common stock; the risk that the Transaction and its announcement could have an adverse effect on the parties' business relationships and business generally, including the ability of the Company to retain customers and retain and hire key personnel and maintain relationships with their suppliers and customers, and on their operating results and businesses generally; the risk of unforeseen or unknown liabilities; customer, shareholder, regulatory and other stakeholder approvals and support; the risk of unexpected future capital expenditures; the risk of potential litigation relating to the Transaction that could be instituted against the Company or its directors and/or officers; the risk associated with third party contracts containing material consent, anti-assignment, transfer or other provisions that may be related to the Transaction which are not waived or otherwise satisfactorily resolved; the risk of rating agency actions and the Company's ability to access short- and long-term debt markets on a timely and affordable basis; the risk of various events that could disrupt operations, including severe weather, such as droughts, floods, avalanches and earthquakes, cybersecurity attacks, security threats and governmental response to them, and technological changes; the risks of labor disputes, changes in labor costs and labor difficulties; and the risks resulting from other effects of industry, market, economic, legal or legislative, political or regulatory conditions outside of the Company's control. All such factors are difficult to predict and are beyond our control, including those detailed in the Company's annual report on Form 10-K for the fiscal year ended December 31, 2023 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm), quarterly reports on Form 10-Q and other documents subsequently filed by the Company with the Securities Exchange Commission ("SEC") and that are available on the Company's website at https://www.atsginc.com/investors/reports-and-filings/sec-filings and at https://www.sec.gov/edgar/browse/?CIK=894081&owner=exclude. The Company's forward-looking statements are based on assumptions that the Company believes to be reasonable but that may not prove to be accurate. Other unpredictable or factors not discussed in this communication could also have material adverse effects on forward-looking statements. The Company does not assume an obligation to update any forward-looking statements, except as required by applicable law. These forward-looking statements speak only as of the date hereof.

Additional Information and Where to Find It

In connection with the Transaction, the Company will file with the SEC a proxy statement on Schedule 14A (the "Proxy Statement"). The definitive version of the Proxy Statement will be sent to the stockholders of the Company seeking their approval of the Transaction and other related matters.

INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE PROXY STATEMENT ON SCHEDULE 14A WHEN IT BECOMES AVAILABLE, AS WELL AS ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC IN CONNECTION WITH THE TRANSACTION OR INCORPORATED BY REFERENCE THEREIN AND ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION REGARDING THE COMPANY, THE TRANSACTION AND RELATED MATTERS.

Investors and security holders may obtain free copies of these documents, including the Proxy Statement, and other documents filed with the SEC by the Company through the website maintained by the SEC at https://www.sec.gov/edgar/browse/?CIK=894081&owner=exclude. Copies of documents filed with the SEC by the Company will be made available free of charge by accessing the Company's website at https://atsginc.com/investors or by contacting the Company via email by sending a message to [email protected].

Participants in the Solicitation

The Company and its directors and executive officers may be deemed to be participants in the solicitation of proxies from the stockholders of the Company in connection with the Transaction under the rules of the SEC. Information about the interests of the directors and executive officers of the Company and other persons who may be deemed to be participants in the solicitation of stockholders of the Company in connection with the Transaction and a description of their direct and indirect interests, by security holdings or otherwise, will be included in the Proxy Statement related to the Transaction, which will be filed with the SEC. Information about the directors and executive officers of the Company and their ownership of the Company common stock is also set forth in the Company's definitive proxy statement in connection with its 2024 Annual Meeting of Stockholders, as filed with the SEC on April 11, 2024 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000114036124019362/ny20017081x1_def14a.htm) and in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2023 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm). Information about the directors and executive officers of the Company, their ownership of the Company common stock, and the Company's transactions with related persons is set forth in the sections entitled "Directors, Executive Officers and Corporate Governance," "Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters," and "Certain Relationships and Related Stockholder Matters" included in the Company's annual report on Form 10-K for the fiscal year ended December 31, 2023, which was filed with the SEC on February 29, 2024 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm), and in the sections entitled "Corporate Governance and Board Matters," and "Stock Ownership of Management," included in the Company's definitive proxy statement in connection with its 2024 Annual Meeting of Stockholders, as filed with the SEC on April 11, 2024 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm). Additional information regarding the interests of such participants in the solicitation of proxies in respect of the Transaction will be included in the Proxy Statement and other relevant materials to be filed with the SEC when they become available These documents can be obtained free of charge from the SEC's website at www.sec.gov.

No Offer or Solicitation

This communication is not intended to and shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy any securities or the solicitation of any vote of approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended.

[The following communication was made available by Air Transport Services Group, Inc. via a post on LinkedIn]

[The post contains a link to

https://www.linkedin.com/company/stonepeakpartners and
https://www.atsginc.com/investors/news-and-events/ir-press-release/year/2024/11-04-2024-133047323]

Cautionary Statement Regarding Forward-Looking Statements

This communication contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 (the "Act"). Except for historical information contained in this communication, the matters discussed herein contain forward-looking statements that involve risks and uncertainties. Such statements are provided under the "safe harbor" protection of the Act. Forward-looking statements include, but are not limited to, statements regarding anticipated operating results, prospects and aircraft in service, technological developments, economic trends, expected transactions and similar matters. The words "may," "believe," "expect," "anticipate," "target," "goal," "project," "estimate," "guidance," "forecast," "outlook," "will," "continue," "likely," "should," "hope," "seek," "plan," "intend" and variations of such words and similar expressions identify forward-looking statements. Similarly, descriptions of the Company's objectives, strategies, plans, goals or targets are also forward-looking statements. Forward-looking statements are susceptible to a number of risks, uncertainties and other factors. While the Company believes that the assumptions underlying its forward-looking statements are reasonable, investors are cautioned that any of the assumptions could prove to be inaccurate and, accordingly, the Company's actual results and experiences could differ materially from the anticipated results or other expectations expressed in its forward-looking statements.

Forward-looking statements by their nature address matters that are, to different degrees, uncertain, such as statements regarding the transactions contemplated by the Agreement and Plan of Merger, by and among the Company, Stonepeak Nile Parent LLC and Stonepeak Nile MergerCo Inc. (the "Transaction"), including the expected time period to consummate the Transaction, the anticipated benefits (including synergies) of the Transaction and integration and transition plans, opportunities, anticipated future performance, expected share buyback programs and expected dividends. All such forward-looking statements are based upon current plans, estimates, expectations and ambitions that are subject to risks, uncertainties and assumptions, many of which are beyond the control of Air Transport Services Group, Inc. (the "Company"), that could cause actual results to differ materially from those expressed in such forward-looking statements. Key factors that could cause actual results to differ materially include, but are not limited to, the expected timing and likelihood of completion of the Transaction, including the timing, receipt and terms and conditions of any required governmental and regulatory approvals of the Transaction; the occurrence of any event, change or other circumstances that could give rise to the termination of the definitive agreement; the possibility that the Company's stockholders may not approve the Transaction; the risk that the anticipated tax treatment of the Transaction is not obtained; the risk that the parties may not be able to satisfy the conditions to the Transaction in a timely manner or at all; risks related to disruption of management time from ongoing business operations due to the Transaction; the risk that any announcements relating to the Transaction could have adverse effects on the market price of the Company's common stock; the risk that the Transaction and its announcement could have an adverse effect on the parties' business relationships and business generally, including the ability of the Company to retain customers and retain and hire key personnel and maintain relationships with their suppliers and customers, and on their operating results and businesses generally; the risk of unforeseen or unknown liabilities; customer, shareholder, regulatory and other stakeholder approvals and support; the risk of unexpected future capital expenditures; the risk of potential litigation relating to the Transaction that could be instituted against the Company or its directors and/or officers; the risk associated with third party contracts containing material consent, anti-assignment, transfer or other provisions that may be related to the Transaction which are not waived or otherwise satisfactorily resolved; the risk of rating agency actions and the Company's ability to access short- and long-term debt markets on a timely and affordable basis; the risk of various events that could disrupt operations, including severe weather, such as droughts, floods, avalanches and earthquakes, cybersecurity attacks, security threats and governmental response to them, and technological changes; the risks of labor disputes, changes in labor costs and labor difficulties; and the risks resulting from other effects of industry, market, economic, legal or legislative, political or regulatory conditions outside of the Company's control. All such factors are difficult to predict and are beyond our control, including those detailed in the Company's annual report on Form 10-K for the fiscal year ended December 31, 2023 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm), quarterly reports on Form 10-Q and other documents subsequently filed by the Company with the Securities Exchange Commission ("SEC") and that are available on the Company's website at https://www.atsginc.com/investors/reports-and-filings/sec-filings and at https://www.sec.gov/edgar/browse/?CIK=894081&owner=exclude. The Company's forward-looking statements are based on assumptions that the Company believes to be reasonable but that may not prove to be accurate. Other unpredictable or factors not discussed in this communication could also have material adverse effects on forward-looking statements. The Company does not assume an obligation to update any forward-looking statements, except as required by applicable law. These forward-looking statements speak only as of the date hereof.

Additional Information and Where to Find It

In connection with the Transaction, the Company will file with the SEC a proxy statement on Schedule 14A (the "Proxy Statement"). The definitive version of the Proxy Statement will be sent to the stockholders of the Company seeking their approval of the Transaction and other related matters.

INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE PROXY STATEMENT ON SCHEDULE 14A WHEN IT BECOMES AVAILABLE, AS WELL AS ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC IN CONNECTION WITH THE TRANSACTION OR INCORPORATED BY REFERENCE THEREIN AND ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION REGARDING THE COMPANY, THE TRANSACTION AND RELATED MATTERS.

Investors and security holders may obtain free copies of these documents, including the Proxy Statement, and other documents filed with the SEC by the Company through the website maintained by the SEC at https://www.sec.gov/edgar/browse/?CIK=894081&owner=exclude. Copies of documents filed with the SEC by the Company will be made available free of charge by accessing the Company's website at https://atsginc.com/investors or by contacting the Company via email by sending a message to [email protected].

Participants in the Solicitation

The Company and its directors and executive officers may be deemed to be participants in the solicitation of proxies from the stockholders of the Company in connection with the Transaction under the rules of the SEC. Information about the interests of the directors and executive officers of the Company and other persons who may be deemed to be participants in the solicitation of stockholders of the Company in connection with the Transaction and a description of their direct and indirect interests, by security holdings or otherwise, will be included in the Proxy Statement related to the Transaction, which will be filed with the SEC. Information about the directors and executive officers of the Company and their ownership of the Company common stock is also set forth in the Company's definitive proxy statement in connection with its 2024 Annual Meeting of Stockholders, as filed with the SEC on April 11, 2024 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000114036124019362/ny20017081x1_def14a.htm) and in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2023 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm). Information about the directors and executive officers of the Company, their ownership of the Company common stock, and the Company's transactions with related persons is set forth in the sections entitled "Directors, Executive Officers and Corporate Governance," "Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters," and "Certain Relationships and Related Stockholder Matters" included in the Company's annual report on Form 10-K for the fiscal year ended December 31, 2023, which was filed with the SEC on February 29, 2024 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm), and in the sections entitled "Corporate Governance and Board Matters," and "Stock Ownership of Management," included in the Company's definitive proxy statement in connection with its 2024 Annual Meeting of Stockholders, as filed with the SEC on April 11, 2024 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm). Additional information regarding the interests of such participants in the solicitation of proxies in respect of the Transaction will be included in the Proxy Statement and other relevant materials to be filed with the SEC when they become available These documents can be obtained free of charge from the SEC's website at www.sec.gov.

No Offer or Solicitation

This communication is not intended to and shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy any securities or the solicitation of any vote of approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended.

[The following communication was made available by Air Transport Services Group, Inc. via a post on X]

[The post contains a link to

https://twitter.com/Stonepeak?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor and https://www.atsginc.com/investors/news-and-events/ir-press-release/year/2024/11-04-2024-133047323]

Cautionary Statement Regarding Forward-Looking Statements

This communication contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 (the "Act"). Except for historical information contained in this communication, the matters discussed herein contain forward-looking statements that involve risks and uncertainties. Such statements are provided under the "safe harbor" protection of the Act. Forward-looking statements include, but are not limited to, statements regarding anticipated operating results, prospects and aircraft in service, technological developments, economic trends, expected transactions and similar matters. The words "may," "believe," "expect," "anticipate," "target," "goal," "project," "estimate," "guidance," "forecast," "outlook," "will," "continue," "likely," "should," "hope," "seek," "plan," "intend" and variations of such words and similar expressions identify forward-looking statements. Similarly, descriptions of the Company's objectives, strategies, plans, goals or targets are also forward-looking statements. Forward-looking statements are susceptible to a number of risks, uncertainties and other factors. While the Company believes that the assumptions underlying its forward-looking statements are reasonable, investors are cautioned that any of the assumptions could prove to be inaccurate and, accordingly, the Company's actual results and experiences could differ materially from the anticipated results or other expectations expressed in its forward-looking statements.

Forward-looking statements by their nature address matters that are, to different degrees, uncertain, such as statements regarding the transactions contemplated by the Agreement and Plan of Merger, by and among the Company, Stonepeak Nile Parent LLC and Stonepeak Nile MergerCo Inc. (the "Transaction"), including the expected time period to consummate the Transaction, the anticipated benefits (including synergies) of the Transaction and integration and transition plans, opportunities, anticipated future performance, expected share buyback programs and expected dividends. All such forward-looking statements are based upon current plans, estimates, expectations and ambitions that are subject to risks, uncertainties and assumptions, many of which are beyond the control of Air Transport Services Group, Inc. (the "Company"), that could cause actual results to differ materially from those expressed in such forward-looking statements. Key factors that could cause actual results to differ materially include, but are not limited to, the expected timing and likelihood of completion of the Transaction, including the timing, receipt and terms and conditions of any required governmental and regulatory approvals of the Transaction; the occurrence of any event, change or other circumstances that could give rise to the termination of the definitive agreement; the possibility that the Company's stockholders may not approve the Transaction; the risk that the anticipated tax treatment of the Transaction is not obtained; the risk that the parties may not be able to satisfy the conditions to the Transaction in a timely manner or at all; risks related to disruption of management time from ongoing business operations due to the Transaction; the risk that any announcements relating to the Transaction could have adverse effects on the market price of the Company's common stock; the risk that the Transaction and its announcement could have an adverse effect on the parties' business relationships and business generally, including the ability of the Company to retain customers and retain and hire key personnel and maintain relationships with their suppliers and customers, and on their operating results and businesses generally; the risk of unforeseen or unknown liabilities; customer, shareholder, regulatory and other stakeholder approvals and support; the risk of unexpected future capital expenditures; the risk of potential litigation relating to the Transaction that could be instituted against the Company or its directors and/or officers; the risk associated with third party contracts containing material consent, anti-assignment, transfer or other provisions that may be related to the Transaction which are not waived or otherwise satisfactorily resolved; the risk of rating agency actions and the Company's ability to access short- and long-term debt markets on a timely and affordable basis; the risk of various events that could disrupt operations, including severe weather, such as droughts, floods, avalanches and earthquakes, cybersecurity attacks, security threats and governmental response to them, and technological changes; the risks of labor disputes, changes in labor costs and labor difficulties; and the risks resulting from other effects of industry, market, economic, legal or legislative, political or regulatory conditions outside of the Company's control. All such factors are difficult to predict and are beyond our control, including those detailed in the Company's annual report on Form 10-K for the fiscal year ended December 31, 2023 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm), quarterly reports on Form 10-Q and other documents subsequently filed by the Company with the Securities Exchange Commission ("SEC") and that are available on the Company's website at https://www.atsginc.com/investors/reports-and-filings/sec-filings and at https://www.sec.gov/edgar/browse/?CIK=894081&owner=exclude. The Company's forward-looking statements are based on assumptions that the Company believes to be reasonable but that may not prove to be accurate. Other unpredictable or factors not discussed in this communication could also have material adverse effects on forward-looking statements. The Company does not assume an obligation to update any forward-looking statements, except as required by applicable law. These forward-looking statements speak only as of the date hereof.

Additional Information and Where to Find It

In connection with the Transaction, the Company will file with the SEC a proxy statement on Schedule 14A (the "Proxy Statement"). The definitive version of the Proxy Statement will be sent to the stockholders of the Company seeking their approval of the Transaction and other related matters.

INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE PROXY STATEMENT ON SCHEDULE 14A WHEN IT BECOMES AVAILABLE, AS WELL AS ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC IN CONNECTION WITH THE TRANSACTION OR INCORPORATED BY REFERENCE THEREIN AND ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION REGARDING THE COMPANY, THE TRANSACTION AND RELATED MATTERS.

Investors and security holders may obtain free copies of these documents, including the Proxy Statement, and other documents filed with the SEC by the Company through the website maintained by the SEC at https://www.sec.gov/edgar/browse/?CIK=894081&owner=exclude. Copies of documents filed with the SEC by the Company will be made available free of charge by accessing the Company's website at https://atsginc.com/investors or by contacting the Company via email by sending a message to [email protected].

Participants in the Solicitation

The Company and its directors and executive officers may be deemed to be participants in the solicitation of proxies from the stockholders of the Company in connection with the Transaction under the rules of the SEC. Information about the interests of the directors and executive officers of the Company and other persons who may be deemed to be participants in the solicitation of stockholders of the Company in connection with the Transaction and a description of their direct and indirect interests, by security holdings or otherwise, will be included in the Proxy Statement related to the Transaction, which will be filed with the SEC. Information about the directors and executive officers of the Company and their ownership of the Company common stock is also set forth in the Company's definitive proxy statement in connection with its 2024 Annual Meeting of Stockholders, as filed with the SEC on April 11, 2024 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000114036124019362/ny20017081x1_def14a.htm) and in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2023 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm). Information about the directors and executive officers of the Company, their ownership of the Company common stock, and the Company's transactions with related persons is set forth in the sections entitled "Directors, Executive Officers and Corporate Governance," "Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters," and "Certain Relationships and Related Stockholder Matters" included in the Company's annual report on Form 10-K for the fiscal year ended December 31, 2023, which was filed with the SEC on February 29, 2024 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm), and in the sections entitled "Corporate Governance and Board Matters," and "Stock Ownership of Management," included in the Company's definitive proxy statement in connection with its 2024 Annual Meeting of Stockholders, as filed with the SEC on April 11, 2024 (and which is available at https://www.sec.gov/ix?doc=/Archives/edgar/data/894081/000089408124000016/atsg-20231231.htm). Additional information regarding the interests of such participants in the solicitation of proxies in respect of the Transaction will be included in the Proxy Statement and other relevant materials to be filed with the SEC when they become available These documents can be obtained free of charge from the SEC's website at www.sec.gov.

No Offer or Solicitation

This communication is not intended to and shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy any securities or the solicitation of any vote of approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended.

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