Waystar Holding Corp. — Director's Dealing 2025

Sep 10, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Waystar Holding Corp. (WAY)
CIK: 0001990354
Period of Report: 2025-06-06

Reporting Person: Bridge T. Craig (Chief Transformation Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-06-06	Common Stock	F	14488	$40.55	Disposed	668355	Direct
2025-09-08	Common Stock	S	85000	$40.0618	Disposed	583355	Direct

Footnotes

F1: Includes unvested RSUs.

F2: This transaction was not timely filed. The transaction represents shares of common stock withheld to pay taxes upon vesting of Non-Qualified Stock Options granted to the Reporting Person on June 6, 2024. The number of shares withheld was determined on June 6, 2025, based on the closing price of WAY common stock on that date. In addition, the total number of shares beneficially owned following the reported transaction reflects a correction to prior filings to account for an earlier misclassification of an option exercise. The ending balance reported herein is accurate and reflects the Reporting Person's current holdings.

F3: The price reported in Column 4 is a weighted average price. These shares of common stock, par value $0.01 per share ("Common Stock") of Waystar Holding Corp. (the "Issuer") were sold in multiple transactions ranging from $40.00 to $40.22, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price in the range set forth in this footnote.

F4: These transactions occurred automatically pursuant to a plan adopted by the Reporting Person on November 27, 2024 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).