Outset Medical CEO sells 3,437 shares for taxes

Outset Medical, Inc. (OM) reported that Chair and CEO Leslie Trigg sold 3,437 shares of Common Stock on August 17, 2026 at $4.39 per share.

Rhea-AI Filing Summary

Outset Medical, Inc. (OM) reported that Chair and CEO Leslie Trigg sold 3,437 shares of Common Stock on August 17, 2026 at $4.39 per share. According to the disclosure, this was a mandatory “sell to cover” transaction to satisfy tax withholding obligations on the vesting of 9,319 RSU-based shares, and is described as not a discretionary trade. Following the sale, Trigg held 194,597 shares directly, plus indirect holdings of 41,666 shares through the Trigg 2002 Rev Trust and 584 shares through the Trigg Family Trust.

Insider Trade Summary

Net Seller: 3,437 shares

Net Sell 3 txns

Insider Trigg Leslie

Role Chair and CEO

Sold 3,437 shs ($15K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	3,437	$4.39	$15K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 194,597 shares (Direct); Common Stock — 41,666 shares (Indirect, Trigg 2002 Rev Trust); Common Stock — 584 shares (Indirect, Trigg Family Trust)

Footnotes (1)

1. F1. Required number of shares sold by the reporting person to cover tax withholding obligations in connection with the vesting of an aggregate of 9,319 shares of Common Stock underlying RSUs granted to the reporting person on January 12, 2024 and June 10, 2025. This sale was made to satisfy tax withholding obligations through a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

Key Figures

Shares sold: 3,437 shares Sale price per share: $4.39 Direct holdings after transaction: 194,597 shares +3 more

6 metrics

Shares sold 3,437 shares Common Stock sold on August 17, 2026 to cover tax withholding

Sale price per share $4.39 Price per share for the 3,437 shares of Common Stock sold

Direct holdings after transaction 194,597 shares Shares of Outset Medical Common Stock held directly by Leslie Trigg after the sale

Indirect holdings (Trigg 2002 Rev Trust) 41,666 shares Common Stock held indirectly via the Trigg 2002 Rev Trust after the reported date

Indirect holdings (Trigg Family Trust) 584 shares Common Stock held indirectly via the Trigg Family Trust after the reported date

RSU shares vesting 9,319 shares Aggregate Common Stock underlying RSUs whose vesting triggered tax withholding sale

Key Terms

sell to cover, tax withholding obligations, RSUs

3 terms

sell to cover financial

"This sale was made to satisfy tax withholding obligations through a "sell to cover" transaction"

Sell to cover is when a person who receives company stock through options or awards sells just enough shares immediately to pay required taxes, exercise costs, or fees, keeping the rest. Think of it like cashing part of a bonus to cover the tax bill so you can keep the remainder. For investors, it can create predictable small selling pressure and slightly change the number of shares actually held by insiders without increasing long‑term dilution.

tax withholding obligations financial

"Required number of shares sold by the reporting person to cover tax withholding obligations"

RSUs financial

"underlying RSUs granted to the reporting person on January 12, 2024 and June 10, 2025"

RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Outset Medical (OM) report for Leslie Trigg?

Outset Medical reported that Chair and CEO Leslie Trigg sold 3,437 shares of Common Stock on August 17, 2026 at $4.39 per share to cover tax withholding obligations on vested RSUs.

Was the Leslie Trigg share sale in OM stock a discretionary trade?

The filing states the 3,437-share sale was executed as a “sell to cover” solely to satisfy tax withholding obligations on 9,319 vested RSU shares and explicitly notes it does not represent a discretionary trade by Leslie Trigg.

How many Outset Medical (OM) shares does Leslie Trigg hold after this Form 4 transaction?

After the reported sale, Leslie Trigg holds 194,597 OM shares directly, plus 41,666 shares indirectly via the Trigg 2002 Rev Trust and 584 shares indirectly via the Trigg Family Trust, according to the filing.

What RSU vesting event triggered the tax-related sale in OM shares?

The footnote explains the sale covered tax withholding obligations related to the vesting of an aggregate of 9,319 shares of Common Stock underlying RSUs granted to Leslie Trigg on January 12, 2024 and June 10, 2025.

Is the reported OM insider transaction under a Rule 10b5-1 trading plan?

The document-level indicator shows the Rule 10b5-1 checkbox is not affirmed. The footnote instead characterizes the sale as a tax-related “sell to cover” transaction rather than a discretionary or plan-based trade.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/18/2026 - 07:46 PM Accepted by SEC EDGAR 08/18/2026 - 07:45 PM Learn about SEC filing dates

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^*

Trigg Leslie

(Last) (First) (Middle)

3052 ORCHARD DRIVE

(Street)

SAN JOSE CALIFORNIA 95134

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Outset Medical, Inc. [ OM ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/17/2026

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

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/17/2026		S		3,437(1)	D	$4.39	194,597	D
Common Stock								41,666	I	Trigg 2002 Rev Trust
Common Stock								584	I	Trigg Family Trust

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. Required number of shares sold by the reporting person to cover tax withholding obligations in connection with the vesting of an aggregate of 9,319 shares of Common Stock underlying RSUs granted to the reporting person on January 12, 2024 and June 10, 2025. This sale was made to satisfy tax withholding obligations through a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

	John Brottem For: Leslie Trigg	08/18/2026
	** 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.
* Form 4: SEC 1474 (03-26)