APi Group Corp

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by JTOO LLC and the Reporting Person on May 9, 2025.

2. Represents the weighted average price of the shares sold on March 2, 2026. The prices of the shares sold pursuant to the transactions ranged from $43.415 to $44.415 per share. The Reporting Person or JTOO LLC, upon request, will provide the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares sold at each separate price.

3. Represents the weighted average price of the shares sold on March 2, 2026. The prices of the shares sold pursuant to the transactions ranged from $44.20 to $44.59 per share. The Reporting Person or JTOO LLC, upon request, will provide the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares sold at each separate price.

4. The shares of Common Stock reported herein are held directly by JTOO LLC, of which Mr. Lillie is the manager.

5. Represents the weighted average price of the shares sold on March 3, 2026. The prices of the shares sold pursuant to the transactions ranged from $42.38 to $43.38 per share. The Reporting Person or JTOO LLC, upon request, will provide the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares sold at each separate price.

6. Represents the weighted average price of the shares sold on March 3, 2026. The prices of the shares sold pursuant to the transactions ranged from $43.39 to $43.52 per share. The Reporting Person or JTOO LLC, upon request, will provide the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares sold at each separate price.

7. Represents the weighted average price of the shares sold on March 4, 2026. The prices of the shares sold pursuant to the transactions ranged from $42.49 to $43.4225 per share. The Reporting Person or JTOO LLC, upon request, will provide the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares sold at each separate price.

8. Represents the weighted average price of the shares sold on March 4, 2026. The prices of the shares sold pursuant to the transactions ranged from $43.5173 to $43.5781 per share. The Reporting Person or JTOO LLC, upon request, will provide the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares sold at each separate price.

9. The shares of Common Stock and Series A Preferred Stock are held directly by Mariposa Acquisition IV, LLC. JTOO LLC, which is owned by the Lillie 2015 Dynasty Trust, of which Mr. Lillie is the grantor, holds a limited liability company interest in Mariposa Acquisition IV, LLC and, as a result, may be deemed to have a pecuniary interest in 15,552 shares of Common Stock and 1,152,000 shares of Series A Preferred Stock held by Mariposa Acquisition IV, LLC. Mr. Lillie disclaims beneficial ownership of any shares except to the extent of his pecuniary interest therein.

10. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.

11. These restricted stock units vest on May 16, 2026, which is the one-year anniversary of the grant date, subject to the Reporting Person's continuous service with the Issuer as of the vesting date.

12. The Series A Preferred Stock is convertible at any time at the election of the holder, on a one-for-one basis, into shares of Common Stock for no additional consideration. The Series A Preferred Stock shall automatically convert into Common Stock on the last day of the seventh full financial year of the Issuer following October 1, 2019 (or if such date is not a trading day, the first trading day immediately following such date).