BigBear.ai (BBAI)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-03-26 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: BigBear.ai Holdings, Inc. (BBAI) CIK: 0001836981 --- Reporting Owner --- Name: McAleenan Kevin CIK: 0002052799 Role: Director, Officer (Chief Executive Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-03-26 | Code: A (Grant or award) Shares: +290,730 | Price: $0.00 Shares Owned After: 1,513,886 | Ownership: D (Direct) Footnotes: [F1] Each restricted stock unit ("RSU") represents a right to receive one share of the issuer's Common Stock, subject to the Reporting Person's continued service through the vesting date. The reported RSUs were granted on March 26, 2026 and vest as follows: 25% of the RSUs will vest on March 26, 2027 and the remaining 75% will vest in equal quarterly installments on the last day of each calendar quarter thereafter, such that the entire award will be vested on December 31, 2029 (subject to the reporting person's continued employment through each vesting date). --- Footnotes (Complete Index) --- F1: Each restricted stock unit ("RSU") represents a right to receive one share of the issuer's Common Stock, subject to the Reporting Person's continued service through the vesting date. The reported RSUs were granted on March 26, 2026 and vest as follows: 25% of the RSUs will vest on March 26, 2027 and the remaining 75% will vest in equal quarterly installments on the last day of each calendar quarter thereafter, such that the entire award will be vested on December 31, 2029 (subject to the reporting person's continued employment through each vesting date). --- Signature --- /s/ /s/ Sean Ricker as Attorney-in-Fact for Kevin McAleenan (2026-03-27)