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  4. [Form 4] BIODESIX INC Insider Trading Activity

Biodesix Inc (BDSX) major holder Jack W. Schuler buys 15,000 shares

Filing Impact
(Moderate)
Filing Sentiment
(Positive)
Form Type
4

Rhea-AI Filing Summary

Biodesix Inc. insider Jack W. Schuler, a ten percent owner and emeritus director, purchased 15,000 shares of common stock on August 12, 2026 at a weighted average price of $24.4661 per share, with trade prices ranging from $24.00 to $24.50. The shares were acquired indirectly through the Jack W. Schuler Living Trust, which now holds 555,810 shares. A separate indirect holding of 1,800,000 shares is reported for the Jack W. Schuler 2026 GRAT, for which Schuler is also sole trustee.

Positive

  • None.

Negative

  • None.
Insider SCHULER JACK W
Role 10% Owner
Bought 15,000 shs ($367K)
Type Security Shares Price Value
Purchase Common Stock F1, F2 15,000 $24.4661 $367K
holding Common Stock F3 -- -- --
Holdings After Transaction: Common Stock — 555,810 shares (Indirect, By Jack W. Schuler Living Trust); Common Stock — 1,800,000 shares (Indirect, By Jack W. Schuler 2026 GRAT)
Footnotes (3)
  1. F1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $24.00 to $24.50, 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. F2. Jack W. Schuler is the sole trustee of the Jack W. Schuler Living Trust.
  3. F3. Jack W. Schuler is the sole trustee of the Jack W. Schuler 2026 GRAT.
Shares purchased 15,000 shares Common stock purchased on August 12, 2026 by Jack W. Schuler Living Trust
Weighted average purchase price $24.4661 per share Weighted average price for 15,000-share purchase, trades $24.00–$24.50
Price range of trades $24.00 to $24.50 Range of individual transaction prices for the reported purchase
Living Trust holdings after transaction 555,810 shares Common stock indirectly held by Jack W. Schuler Living Trust after purchase
2026 GRAT reported holdings 1,800,000 shares Common stock indirectly held by Jack W. Schuler 2026 GRAT
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
GRAT financial
"Jack W. Schuler is the sole trustee of the Jack W. Schuler 2026 GRAT."
ten percent owner regulatory
"the reporting person is identified as a ten percent owner."

FAQ

What insider transaction did BIODESIX INC (BDSX) report for Jack W. Schuler?
BIODESIX INC reported that Jack W. Schuler indirectly purchased 15,000 shares of common stock on August 12, 2026 through the Jack W. Schuler Living Trust, according to a Form 4 insider trading report.

At what price did Jack W. Schuler buy BDSX shares on August 12, 2026?
Jack W. Schuler bought BDSX shares at a weighted average price of $24.4661 per share, with individual trades executed between $24.00 and $24.50 inclusive, as disclosed in the Form 4 footnote.

How many BIODESIX INC (BDSX) shares does the Jack W. Schuler Living Trust hold after this transaction?
Following the reported purchase, the Jack W. Schuler Living Trust holds 555,810 shares of BIODESIX INC common stock indirectly attributable to Jack W. Schuler as sole trustee.

What additional BDSX holdings are reported for the Jack W. Schuler 2026 GRAT?
The Form 4 reports that the Jack W. Schuler 2026 GRAT holds 1,800,000 shares of BIODESIX INC common stock indirectly, with Jack W. Schuler serving as the sole trustee of this GRAT.

Was the August 12, 2026 BDSX insider trade under a Rule 10b5-1 plan?
The Form 4 indicates the Rule 10b5-1 checkbox is not marked as affirmative, and there is no footnote stating the August 12, 2026 purchase was made pursuant to a Rule 10b5-1 trading plan.

Is Jack W. Schuler a ten percent owner of BIODESIX INC (BDSX)?
Yes. The Form 4 identifies Jack W. Schuler as a ten percent owner of BIODESIX INC and notes his status as an Emeritus Director of the company.

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Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED 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*
SCHULER JACK W
(Last)(First)(Middle)
PO BOX 531
(Street)
LAKE BLUFF ILLINOIS 60044
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
BIODESIX INC [ BDSX ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
DirectorX10% Owner
Officer (give title below)XOther (specify below)
Emeritus Director
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/12/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
CodeVAmount(A) or (D)Price
Common Stock08/12/2026P15,000A$24.4661(1)555,810IBy Jack W. Schuler Living Trust(2)
Common Stock1,800,000IBy Jack W. Schuler 2026 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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount 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 $24.00 to $24.50, 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 2026 GRAT.
/s/ Robin H. Cowie as Attorney-in-Fact for Jack Schuler08/13/2026
** Signature of Reporting PersonDate
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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR