Other Events. On August 24, 2026, Booz Allen Hamilton Holding Corporation (“Booz Allen”) issued a press release announcing that on August 24, 2026 it closed the previously announced acquisition of Ultra Electronics Advanced Tactical Systems, Inc., a Texas corporation (the “Company”), pursuant to a stock purchase agreement by and among Booz Allen Hamilton Inc., a Delaware corporation and a wholly-owned subsidiary of Booz Allen, the Company, Ultra I&C Holdings Limited, a private limited company…

Entry Into a Material Definitive Agreement. On August 4, 2026, Booz Allen Hamilton Inc., a Delaware corporation (the “Company”) and a wholly-owned subsidiary of Booz Allen Hamilton Holding Corporation, a Delaware corporation (the “Parent Guarantor”), issued $700,000,000 aggregate principal amount of its 5.375% Senior Notes due 2030 (the “2030 Notes”) and $500,000,000 aggregate principal amount of its 5.900% Senior Notes due 2034 (the “2034 Notes”, and together with the 2030 Notes, the “Notes”…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information contained in

and Exhibit 99.1 shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in that filing.

Entry Into a Material Definitive Agreement. On June 19, 2026, Booz Allen Hamilton Inc., a Delaware corporation (the “Acquiror”) and a wholly-owned subsidiary of Booz Allen Hamilton Holding Corporation, a Delaware corporation (“Booz Allen”), entered into a stock purchase agreement (the “Purchase Agreement”) by and among (i) the Acquiror, (ii) Ultra I&C Holdings Limited, a private limited company incorporated under the Laws of England and Wales (the “Seller”), (iii) Ultra Electronics Holdings L…

and Exhibit 99.1 shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in that filing.

Director — Ryan Nolan: The company appointed Ryan Nolan as a new member of the Board.

Chief Financial Officer (CFO) — Troy Lahr: Appointment of Troy Lahr as the new Chief Financial Officer.

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The disclosure set forth above under

Entry into a Material Definitive Agreement. On February 27, 2026 (the “Eleventh Amendment Effective Date”), Booz Allen Hamilton Holding Corporation and its wholly-owned subsidiary Booz Allen Hamilton Inc. (the “Company”) entered into an eleventh amendment (the “Eleventh Amendment”) to the Credit Agreement, dated as of July 31, 2012 (as previously amended by the First Amendment to the Credit Agreement, dated as of August 16, 2013, the Second Amendment to the Credit Agreement, dated as of May 7…

include “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Examples of forward-looking statements include information concerning the estimated financial impacts of contract cancellations, as well as any other statement that does not directly relate to any historical or current fact. In some cases, you can identify forward-looking statements by terminology such as “may,” “will,” “could,” “should,” “forecasts,” “expects,” “intends,” “plans,”…

and Exhibit 99.1 shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in that filing.

CFO — Matthew A. Calderone: The CFO is resigning for an external opportunity, but the company has an immediate interim successor (COO) and an active search, making it an orderly succession rather than a sudden loss.

and Exhibit 99.1 shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in that filing.

and Exhibit 99.1 shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in that filing.

Director — Robert C. O'Brien: The filing discloses the appointment of a new director to an expanded board, which is a routine governance action rather than a departure of a senior executive.

Director — Melody Barnes: The filing discloses a director's planned retirement from the board, which is a routine governance event rather than a sudden executive departure.

and Exhibit 99.1 shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in that filing.

Entry Into a Material Definitive Agreement. On March 14, 2025, Booz Allen Hamilton Inc., a Delaware corporation (the “Company”) and a wholly-owned subsidiary of Booz Allen Hamilton Holding Corporation, a Delaware corporation (the “Parent Guarantor”), issued $650,000,000 aggregate principal amount of its 5.950% Senior Notes due 2035 (the “Notes”). The Notes were issued pursuant to an Indenture, dated as of August 4, 2023 (the “Base Indenture”), among the Company, the Parent Guarantor and U.S.…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information contained in

Results of Operations and Financial Condition. On January 31, 2025, Booz Allen Hamilton Holding Corporation (the “Company”) issued a press release announcing its results of operations for the fiscal quarter ended December 31, 2024. A copy of the press release is attached hereto as Exhibit 99.1. On January 31, 2025, the Company posted to the “Investor Relations” section of its website the presentation that accompanies the earnings conference call. A copy of the presentation is attached hereto…

President — Judith H. Dotson: The filing discloses a planned retirement of a sector President with a named internal successor, representing an orderly succession rather than a sudden loss of executive leadership.

Director — Debra L. Dial: The filing discloses the appointment of a new director to a newly created seat, which is a routine board expansion rather than the departure of an existing executive.

Results of Operations and Financial Condition. On October 25, 2024, Booz Allen Hamilton Holding Corporation (the “Company”) issued a press release announcing its results of operations for the fiscal year ended September 30, 2024. A copy of the press release is attached hereto as Exhibit 99.1. On October 25, 2024, the Company posted to the “Investor Relations” section of its website the presentation that accompanies the earnings conference call. A copy of the presentation is attached hereto as…

Results of Operations and Financial Condition. On July 26, 2024, Booz Allen Hamilton Holding Corporation (the “Company”) issued a press release announcing its results of operations for the fiscal year ended June 30, 2024. A copy of the press release is attached hereto as Exhibit 99.1. On July 26, 2024, the Company posted to the “Investor Relations” section of its website the presentation that accompanies the earnings conference call. A copy of the presentation is attached hereto as Exhibit 99…