William Chan - Oct 1, 2025 Form 3 Insider Report for Waystar Holding Corp. (WAY)

Role: Chief Product & AI Officer
Signature: /s/ Gregory R. Packer, as Attorney-in-Fact
Stock symbol: WAY
Transactions as of: Oct 1, 2025
Transactions value $: $0
Form type: 3
Date filed: 10/15/2025, 11:41 AM
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Chan William	Chief Product & AI Officer	1550 DIGITAL DRIVE #300, LEHI	/s/ Gregory R. Packer, as Attorney-in-Fact	2025-10-15	0002091511

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	WAY	Common Stock						1.5M	Oct 1, 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Reflects a grant of 156,944 RSUs granted to the reporting person, which vest over 4 years, with 25% vesting each year beginning October 2, 2026. Each RSU represents a contingent right to receive one share of common stock, $0.01 par value per share (the "Common Stock") upon settlement.