Schuler trust adds 82,465 Biodesix (BDSX) shares in Form 4 filing

Rhea-AI Filing Summary

Biodesix Inc. 10% owner Jack W. Schuler, through his living trust, increased his indirect stake in the company. On January 22, 2026, the Jack W. Schuler Living Trust purchased 82,465 shares of Biodesix common stock in open-market transactions at a weighted average price of $10.9569 per share, with individual trades ranging from $10.675 to $11.10. Following this purchase, the living trust held 1,463,210 shares of Biodesix common stock indirectly for Schuler as sole trustee. A separate vehicle, the Jack W. Schuler 2025 GRAT, is shown as indirectly holding an additional 750,000 shares of Biodesix common stock, also with Schuler as sole trustee.

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

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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^*

SCHULER JACK W

(Last) (First) (Middle)

PO BOX 531

(Street)

LAKE BLUFF IL 60044

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
BIODESIX INC [ BDSX ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
01/22/2026

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	01/22/2026		P		82,465	A	$10.9569(1)	1,463,210	I	By Jack W. Schuler Living Trust(2)
Common Stock								750,000	I	By Jack W. Schuler 2025 GRAT(3)

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 were purchased in multiple transactions at prices ranging from $10.675 to $11.10, 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 purchased at each separate price within the range set forth in this footnote.

2. Jack W. Schuler is the sole trustee of the Jack W. Schuler Living Trust.

3. Jack W. Schuler is the sole trustee of the Jack W. Schuler 2025 GRAT.

	/s/ Robin H. Cowie as Attorney-in-Fact for Jack Schuler	01/26/2026
	** 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 Biodesix (BDSX) report for Jack W. Schuler?

Biodesix reported that Jack W. Schuler, a 10% owner and emeritus director, had his living trust purchase 82,465 shares of Biodesix common stock in an open-market transaction.

At what price did the Schuler trust buy Biodesix (BDSX) shares?

The 82,465 Biodesix shares were bought by the Jack W. Schuler Living Trust at a weighted average price of $10.9569 per share, with individual trade prices ranging from $10.675 to $11.10.

How many Biodesix (BDSX) shares does the Jack W. Schuler Living Trust hold after the transaction?

After the reported purchase, the Jack W. Schuler Living Trust is shown as indirectly holding 1,463,210 shares of Biodesix common stock.

What additional Biodesix (BDSX) holdings are reported for Jack W. Schuler-related entities?

In addition to the living trust, the filing reports that the Jack W. Schuler 2025 GRAT indirectly holds 750,000 shares of Biodesix common stock, with Schuler as sole trustee.

Is this Biodesix (BDSX) Form 4 a purchase or sale by the Schuler trust?

The Form 4 reports an open-market purchase (transaction code P) by the Jack W. Schuler Living Trust of 82,465 Biodesix common shares on January 22, 2026.