As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

  7:11pm‡ Knighthead Capital Mgmt, LLC      SC 13D/A               2:84K  ATI Physical Therapy, Inc.        Davis Polk & … LLP 01/FA 
          Khsu SPV LP LLC³
          Knighthead (NY) Fund, L.P.³
          Knighthead Annuity & Life Assurance Co.³
          Knighthead Distressed Opportunities Fund, L.P.³
          Knighthead Master Fund, L.P.³
  5/6/24  ATI Physical Therapy, Inc.        10-Q        3/31/24   83:7.7M                                                            
  5/6/24  ATI Physical Therapy, Inc.        8-K:2,9      5/6/24   12:619K                                                            
 4/26/24  ATI Physical Therapy, Inc.        ARS        12/31/23    1:5.9M                                                            
 4/26/24  ATI Physical Therapy, Inc.        DEFA14A                2:562K                                                            
 4/26/24  ATI Physical Therapy, Inc.        DEF 14A     6/12/24   11:1.9M                                                            
 3/27/24  Cox Christopher L                 4/A        Officer²    1:5K   ATI Physical Therapy, Inc.                                 
 3/26/24  Jordan Joseph Francis             4          Officer²    1:5K   ATI Physical Therapy, Inc.                                 
 3/26/24  Kantz Erik                        4          Officer²    1:5K   ATI Physical Therapy, Inc.                                 
 3/26/24  Rhodes Brent Michael              4          Officer²    1:5K   ATI Physical Therapy, Inc.                                 
 3/26/24  Tansey Eimile                     4          Officer²    1:6K   ATI Physical Therapy, Inc.                                 
 3/26/24  Gregerson Scott                   4          Officer²    1:5K   ATI Physical Therapy, Inc.                                 
 3/26/24  Oakes Augustus                    4          Officer²    1:5K   ATI Physical Therapy, Inc.                                 
 3/26/24  Cox Christopher L                 4          Officer²    1:5K   ATI Physical Therapy, Inc.                                 
 3/26/24  Vitti Sharon                      4          Dir.,Off.²  1:6K   ATI Physical Therapy, Inc.                                 
 3/18/24  Rhodes Brent Michael              4          Officer²    1:5K   ATI Physical Therapy, Inc.                                 
 3/18/24  Kantz Erik                        4          Officer²    1:5K   ATI Physical Therapy, Inc.                                 
 3/15/24  ATI Physical Therapy, Inc.        8-K:5       3/12/24   11:171K                                                            
 3/11/24  Rhodes Brent Michael              4          Officer²    1:5K   ATI Physical Therapy, Inc.                                 
 3/11/24  Oakes Augustus                    4          Officer²    1:5K   ATI Physical Therapy, Inc.                                 

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‡	A non-Insider-Ownership Filing that was accepted after the SEC “closed” at 5:30:00pm ET.  The legal “Filed As Of” date may be the next, or another, day.
¹	Filing/Form Types:  -K
	4	Statement of Changes in Beneficial Ownership of Securities by an Insider — Form 4 { The Filer is an Insider² of the Issuer }.
	8-K	Current Report — Form 8-K { Item 1: Business & Operations;  2: Financial Info;  3: Securities & Trading;  4: Accountants & Accounting;  5: Governance & Management;  6: Asset-Backed Securities;  7: Disclosures;  8: Events;  9: Financials }.
	10-Q	Quarterly Report — Form 10-Q.
	ARS	Annual Report to Security Holders.
	DEF 14A	Definitive Proxy Statement — Schedule 14A.
	DEFA14A	Definitive Additional Proxy Soliciting Material — Schedule 14A.
	SC 13D	Statement of Acquisition of Beneficial Ownership by an “Active” Investor — Schedule 13D.
	/A	Amendment to, or Amended version of, a previous Filing of this Type.
²	Insider:  The Filer is a Director, Officer, 10% Owner and/or Other “insider” of the Issuer.
³	Group Member:  A Registrant or non-Registrant party to this Filing made by a Group.