Sec Form 4 Filing - GAMSEY DAVID L @ FIRST ADVANTAGE CORP - 2023-05-10

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person GAMSEY DAVID L 2. Issuer Name and Ticker or Trading Symbol FIRST ADVANTAGE CORP [ FA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) EVP & Chief Financial Officer (Last) (First) (Middle) C/O FIRST ADVANTAGE CORPORATION, 1 CONCOURSE PARKWAY, SUITE 200 3. Date of Earliest Transaction (MM/DD/YY) 05/10/2023 (Street) ATLANTA, GA30328 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 559,954 ( 1 ) ( 2 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Options (Right to Buy) $ 15 05/10/2023 A( 3 ) 178,473 ( 3 ) ( 3 ) 06/22/2031 Common Stock 178,473 $ 0 448,030 ( 4 ) D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other GAMSEY DAVID L C/O FIRST ADVANTAGE CORPORATION 1 CONCOURSE PARKWAY, SUITE 200 ATLANTA, GA30328 EVP & Chief Financial Officer Signatures /s/ Bret T. Jardine, Attorney-in-Fact 05/12/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Includes shares of common stock acquired under the Employee Stock Purchase Plan of First Advantage Corporation (the "Company"). Effective as of May 10, 2023, the Company's Board of Directors approved a modification of the vesting terms of unvested and unearned performance-based awards (the "Modification"), including 180,736 shares of restricted stock that is subject to time- and performance-based vesting conditions, previously reported and included in the above balance. ( 2 )The Modification adds incremental vesting criteria to such restricted stock, which allows such restricted stock to vest into the following number of shares of common stock, based solely on time, as follows, subject to continued service through such date: 36,147 shares on January 31, 2024, 72,294 shares on January 31, 2025, and 72,295 shares on January 31, 2026, while preserving the eligibility to vest earlier upon a future "Realization Event" (as that term is defined in the relevant award agreement). As a result, 100% of such restricted stock will be vested on January 31, 2026 even if no Realization Event occurs prior to such date. ( 3 )The reporting person currently owns 178,473 previously unreported stock options, subject to time- and performance-based vesting criteria. The Modification adds incremental vesting criteria to such stock options, which allows the following number of such stock options to vest, based solely on time, as follows, subject to continued service through such date: 35,694 options on January 31, 2024, 71,389 options on January 31, 2025, and 71,390 options on January 31, 2026, while preserving the eligibility to vest earlier upon a future "Realization Event" (as that term is defined in the relevant award agreement). As a result, 100% of such stock options will be vested on January 31, 2026 even if no Realization Event occurs prior to such date. ( 4 )Includes 269,557 previously reported time-based stock options, with the 89,606 remaining unvested time-based stock options scheduled to vest in equal installments on January 31, 2024 and 2025.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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