Director Heidi Miller buys 7,200 Waystar (WAY) shares via family trusts

Rhea-AI Filing Summary

Waystar Holding Corp. director Heidi Miller reported an open-market purchase of 7,200 shares of Common Stock at a weighted average price of $26.248 per share. The purchase was made indirectly through family trusts, and her indirect ownership after the transaction is 7,200 shares.

Separately, Miller reported direct ownership of 31,614 shares of Common Stock, which includes unvested restricted stock units. This filing highlights both her new indirect investment via family trusts and her existing direct equity position in Waystar.

Insider Trade Summary

Net Buyer: 7,200 shares ($188,986)

Net Buy 2 txns

Insider MILLER HEIDI

Role Director

Bought 7,200 shs ($189K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	7,200	$26.248	$189K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 7,200 shares (Indirect, By Family Trusts); Common Stock — 31,614 shares (Direct)

Footnotes (1)

1. 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 purchased in multiple transactions ranging from $26.247 to $26.248 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. Includes unvested RSUs.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a 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). See Instruction 10.

1. Name and Address of Reporting Person^*

MILLER HEIDI

(Last) (First) (Middle)

1550 DIGITAL DRIVE, #300

(Street)

LEHI UT 84043

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Waystar Holding Corp. [ WAY ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
03/02/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/02/2026		P		7,200	A	$26.248(1)	7,200	I	By Family Trusts
Common Stock								31,614(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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 purchased in multiple transactions ranging from $26.247 to $26.248 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.

2. Includes unvested RSUs.

Remarks:

	/s/ Gregory R. Packer, as Attorney-in-Fact	03/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Waystar (WAY) director Heidi Miller report?

Heidi Miller reported buying 7,200 Waystar common shares in the open market. The shares were acquired at a weighted average price of $26.248 per share through family trusts, increasing her indirect ownership position in the company.

At what price did Heidi Miller buy Waystar (WAY) shares?

Heidi Miller bought 7,200 Waystar shares at a weighted average price of $26.248. The filing notes these were multiple trades in a narrow range between $26.247 and $26.248 per share, executed as open-market purchases.

How many Waystar (WAY) shares does Heidi Miller now own directly and indirectly?

After the reported transactions, Heidi Miller holds 7,200 Waystar shares indirectly through family trusts and 31,614 shares directly. The direct holdings figure includes unvested restricted stock units, reflecting her combined reported equity exposure to the company.

What type of ownership is shown for Heidi Miller’s new Waystar (WAY) shares?

The 7,200 newly acquired Waystar shares are held indirectly through family trusts. The Form 4 identifies this as indirect ownership, while a separate line shows her direct ownership of 31,614 shares, including unvested restricted stock units.

What does the weighted average price mean in Heidi Miller’s Waystar (WAY) purchase?

The weighted average price of $26.248 reflects multiple trades executed between $26.247 and $26.248. The filing states that detailed price and share information for each individual trade is available upon request from the company, any shareholder, or regulators.