William Chan - 05 Oct 2026 Form 4 Insider Report for Waystar Holding Corp. (WAY)

Reporting relationship: Chief Product & AI Officer
Issuer ticker: WAY
Reported as of: 05 Oct 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 06 Oct 2026, 18:50:25 UTC
Prior SEC filing: 11 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Gregory R. Packer, as Attorney-in-Fact

Filing notes and source

Key filing fact

William Chan filed Form 4 for Waystar Holding Corp. (WAY) on 06 Oct 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: 06 Oct 2026, 18:50.

Change

Previous filing in this sequence was filed on 11 Mar 2026.
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: 06 Oct 2026

Reported non-derivative transactions

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

WAY transaction

Common Stock

Tax liability

Transaction value
Shares: -9,560
Change %: -0.6%
Price: $26.07^*
Shares after: 1,571,252
Date: 05 Oct 2026
Ownership: Direct
Footnotes: F1, F2

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

The transaction represents shares of common stock withheld to pay taxes upon vesting of restricted stock units (RSUs) granted to the Reporting Person on October 2, 2025. The number of shares withheld was determined based on the actual sale price of shares sold on October 5, 2026 pursuant to a "sell-to-cover" transaction.

Footnote F2

Includes unvested RSUs.