Melissa F. (Missy) Miller - Jun 6, 2025 Form 4 Insider Report for Waystar Holding Corp. (WAY)

Role
Chief Marketing Officer
Signature
/s/ Gregory R. Packer, as Attorney-in-Fact
Stock symbol
WAY
Transactions as of
Jun 6, 2025
Transactions value $
-$170,349
Form type
4
Date filed
8/28/2025, 05:02 PM
Previous filing
Aug 28, 2025
Next filing
Jun 12, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Miller Melissa F. (Missy) Chief Marketing Officer 1550 DIGITAL DRIVE, #300, LEHI /s/ Gregory R. Packer, as Attorney-in-Fact 2025-08-27 0001998251

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WAY Common Stock Tax liability -$106K -2.62K -1.34% $40.55 193K Jun 6, 2025 Direct F1
transaction WAY Common Stock Options Exercise $61.8K +3.4K +1.76% $18.19 197K Aug 26, 2025 Direct F2, F3
transaction WAY Common Stock Sale -$126K -3.4K -1.73% $37.01 193K Aug 26, 2025 Direct F2, F3, F4

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction WAY Stock Options (right to buy) Options Exercise $0 -3.4K -9.56% $0.00 32.2K Aug 26, 2025 Common Stock 3.4K $18.19 Direct F2, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 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.
F2 These transactions occurred automatically pursuant to a plan adopted by the Reporting Person on November 20, 2024 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).
F3 Includes unvested RSUs.
F4 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 $37.00 to $37.03, 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.
F5 Options granted August 17, 2020 of which 50% of the option vests in five substantially equal annual installments commencing on August 17, 2021 and the remaining 50% of the option vests upon achievement of certain specified performance-based vesting criteria.