Sec Form 4 Filing - THL AGILITI LLC @ AGILITI, INC. \DE - 2024-05-07

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 THL AGILITI LLC 2. Issuer Name and Ticker or Trading Symbol AGILITI, INC. \DE [ AGTI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O THOMAS H. LEE PARTNERS, L.P., 100 FEDERAL STREET 3. Date of Earliest Transaction (MM/DD/YY) 05/07/2024 (Street) BOSTON, MA02110 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ 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, par value $0.0001 per share 05/07/2024 D( 1 ) 98,195,398 D 0 I See footnotes ( 1 ) ( 2 ) ( 3 ) ( 4 )

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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other THL AGILITI LLC C/O THOMAS H. LEE PARTNERS, L.P. 100 FEDERAL STREET BOSTON, MA02110 X X THOMAS H. LEE ADVISORS, LLC C/O THOMAS H. LEE PARTNERS, L.P. 100 FEDERAL STREET BOSTON, MA02110 X X Thomas H. Lee Equity Fund VIII, L.P. C/O THOMAS H. LEE PARTNERS, L.P. 100 FEDERAL STREET BOSTON, MA02110 X X Thomas H. Lee Parallel Fund VIII, L.P. C/O THOMAS H. LEE PARTNERS, L.P. 100 FEDERAL STREET BOSTON, MA02110 X X THL Executive Fund VIII, L.P. C/O THOMAS H. LEE PARTNERS, L.P. 100 FEDERAL STREET BOSTON, MA02110 X X THL FUND VIII COINVESTMENT PARTNERS, L.P. C/O THOMAS H. LEE PARTNERS, L.P. 100 FEDERAL STREET BOSTON, MA02110 X X THL EQUITY ADVISORS VIII, LLC C/O THOMAS H. LEE PARTNERS, L.P. 100 FEDERAL STREET BOSTON, MA02110 X X THOMAS H LEE PARTNERS LP C/O THOMAS H. LEE PARTNERS, L.P. 100 FEDERAL STREET BOSTON, MA02110 X X THL HOLDCO, LLC C/O THOMAS H. LEE PARTNERS, L.P. 100 FEDERAL STREET BOSTON, MA02110 X X THL MANAGERS VIII, LLC C/O THOMAS H. LEE PARTNERS, L.P. 100 FEDERAL STREET BOSTON, MA02110 X X Signatures THL AGILITI LLC By: /s/ Joshua M. Nelson Name: Joshua M. Nelson Title: Authorized Signatory 05/07/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )See Exhibit 99.1 for text of Footnote 1. ( 2 )See Exhibit 99.1 for text of Footnote 2. ( 3 )See Exhibit 99.1 for text of Footnote 3. ( 4 )See Exhibit 99.1 for text of Footnote 4.

Remarks: Each of the Reporting Persons may be deemed a director by deputization as a result of Scott M. Sperling, the Co-Chief Executive Officer of Thomas H. Lee Partners, L.P ("THL") and co-chair of THL's Management Committee, and a member of the management committee of FS Sponsor LLC, and Michael A. Bell, a Managing Director of THL, and Joshua M. Nelson, a Managing Director of THL and a member of THL's Management Committee and a member of the management committee of FS Sponsor LLC and Megan M. Preiner, a Managing Director at THL, serving on the board of directors of the Issuer. Exhibit 99.1 and Exhibit 99.2 (Joint Filer Information) are incorporated herein by reference. This Form 4 is the first of two Form 4s. The Form 4 has been divided into two filings because there are more than 10 Reporting Persons in total, and the SEC's EDGAR filing system limits a single Form 4 to a maximum of 10 Reporting Persons. Each Form 4 is filed by Designated Filer, THL Agiliti LLC.

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).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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