Director Stephen Skaggs trims Ouster (OUST) stake with 5,000-share sale

Rhea-AI Filing Summary

Ouster, Inc. director Stephen A. Skaggs sold 5,000 shares of Common Stock in an open-market transaction at $30.00 per share. The sale occurred on May 5, 2026 and was made pursuant to a pre-arranged Rule 10b5-1 trading plan dated September 8, 2025.

After this transaction, Skaggs directly holds 61,690 Ouster shares, so the sale represents only a portion of his overall position rather than a full exit.

Insider Trade Summary 10b5-1

Net Seller: 5,000 shares ($150,000)

Net Sell 1 txn

Insider SKAGGS STEPHEN A

Role null

Sold 5,000 shs ($150K)

Type	Security	Shares	Price	Value
Sale	Common Stock	5,000	$30.00	$150K

Holdings After Transaction: Common Stock — 61,690 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares sold: 5,000 shares Sale price: $30.00 per share Shares owned after sale: 61,690 shares

3 metrics

Shares sold 5,000 shares Open-market sale on May 5, 2026

Sale price $30.00 per share Price for Ouster Common Stock in reported sale

Shares owned after sale 61,690 shares Direct Ouster holdings following the transaction

Key Terms

Rule 10b5-1 plan, open-market sale, Common Stock

3 terms

Rule 10b5-1 plan regulatory

"Reflects shares sold pursuant to a Rule 10b5-1 plan dated September 8, 2025."

A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.

open-market sale financial

"transaction_action: open-market sale"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

"security_title: Common Stock"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

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).

X

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^*

SKAGGS STEPHEN A

(Last) (First) (Middle)

350 TREAT AVENUE

(Street)

SAN FRANCISCO CALIFORNIA 94110

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Ouster, Inc. [ OUST ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/05/2026

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	05/05/2026		S		5,000(1)	D	$30	61,690	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. Reflects shares sold pursuant to a Rule 10b5-1 plan dated September 8, 2025.

	/s/ Megan Chung, as Attorney-in-Fact for Stephen A. Skaggs	05/07/2026
	** 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)

FAQ

What insider transaction did Ouster (OUST) report for Stephen A. Skaggs?

Ouster director Stephen A. Skaggs sold 5,000 shares of Common Stock in an open-market transaction. The sale was executed at $30.00 per share and was carried out under a pre-arranged Rule 10b5-1 trading plan.

How large was Stephen A. Skaggs’ Ouster (OUST) share sale?

Stephen A. Skaggs sold 5,000 Ouster Common Stock shares at $30.00 each. This transaction reduces his direct holdings but leaves him with 61,690 shares, indicating the sale was a partial trim rather than a complete exit.

Does Stephen A. Skaggs still hold Ouster (OUST) shares after the sale?

Yes, after selling 5,000 shares, Stephen A. Skaggs directly holds 61,690 Ouster shares. This remaining stake shows he continues to maintain a significant position in the company following the reported open-market transaction.

Was the Ouster (OUST) insider sale by Stephen A. Skaggs pre-planned?

Yes. The filing notes the 5,000-share sale was executed pursuant to a Rule 10b5-1 plan dated September 8, 2025. Such plans are pre-arranged trading programs that can make transaction timing less indicative of insider sentiment.

What type of security did Stephen A. Skaggs trade in Ouster (OUST)?

Stephen A. Skaggs traded Ouster Common Stock in this Form 4 filing. The reported transaction involved a non-derivative open-market sale, with no accompanying option exercises or other derivative security activity disclosed in the data.