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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1990354	Waystar Holding Corp.	WAY	()	A6

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1283718	Board Investment Plan Pension Canada	One Queen Street East, Suite 2500 Toronto Ontario A6 M5C 2W5		No	No	Yes	No
1978825	Cpp Investment Board Private Holdings (4) Inc.	One Queen Street East Ste 2500 Toronto A6 M5C 2W5		No	No	Yes	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2025-05-16	4,111,357	$37.39	25,580,929	No	4	S	Indirect	See footnote
Common Stock	Disposition	2025-05-20	616,704	$37.39	24,964,225	No	4	S	Indirect	See footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	See footnote
No	4	S	Indirect	See footnote

Footnotes

This amount represents the $37.3937 sale price per share of Common Stock, par value $0.01 per share, in a secondary offering, which closed on May 16, 2025.
The securities reported herein are held directly by CPP Investment Board Private Holdings (4) Inc. ("Holdings (4)"), a wholly-owned subsidiary of Canada Pension Plan Investment Board ("CPPIB"). CPPIB is an indirect beneficial owner of such securities directly held by Holdings (4).
This amount represents the $37.3937 sale price per share of Common Stock, par value $0.01 per share, in connection with the underwriters' exercise of their over-allotment option relating to the secondary offering, which closed on May 20, 2025.