William Chan - 09 Mar 2026 Form 4 Insider Report for Waystar Holding Corp. (WAY)

Reporting relationship: Chief Product & AI Officer
Issuer ticker: WAY
Reported as of: 09 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 11 Mar 2026, 18:41:15 UTC
Prior SEC filing: 15 Oct 2025
Source filing: View source filing
Reporting owner signature: /s/ Gregory R. Packer, as Attorney-in-Fact

Key filing fact

William Chan filed Form 4 for Waystar Holding Corp. (WAY) on 11 Mar 2026.

Key facts

This page summarizes William Chan's Form 4 filing for Waystar Holding Corp. (WAY).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 11 Mar 2026, 18:41.

Change

Previous filing in this sequence was filed on 15 Oct 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002091511 Primary reporting owner

Chan William

Relationship: Chief Product & AI Officer
Address: 1550 DIGITAL DRIVE #300, LEHI
Signature: /s/ Gregory R. Packer, as Attorney-in-Fact
Signature date: 11 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

WAY transaction

Common Stock

Award

Transaction value
Shares: +82,271
Change %: +5.5%
Price: $0.000000^*
Shares after: 1,580,812
Date: 09 Mar 2026
Ownership: Direct
Footnotes: F1, F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Reflects a grant of restricted stock units ("RSUs") which vests in four equal annual installments from the initial grant date through March 1, 2030. Each RSU represents a contingent right to receive one share of common stock, $0.01 par value per share (the "Common Stock") upon settlement.

Footnote F2

Reflects restricted stock units ("RSUs") that were issued to the reporting person on October 2, 2025 in connection with the acquisition of Iodine Software Holdings, Inc. by Waystar Holding Corp. These shares are subject to a lock-up agreement that restricts transfer for a period of six months following the closing of the acquisition.

Footnote F3

Includes unvested RSUs.