OneStream (OS) CAO Pamela McIntyre reports 6,505-share 10b5-1 stock sale

Rhea-AI Filing Summary

OneStream, Inc. insider trading report: Chief Accounting Officer Pamela McIntyre reported selling 6,505 shares of Class A common stock on 01/08/2026 at a price of $23.58 per share. This was a pre-arranged sale made under a Rule 10b5-1 trading plan that she adopted on December 8, 2025, which is designed to allow insider trades under preset conditions. After this transaction, she beneficially owned 58,847 shares, which the disclosure notes include unvested restricted stock units.

Insights

Equity compensation and insider-trading analyst

Routine 10b5-1 sale by OneStream’s Chief Accounting Officer, with a sizable remaining stake.

Pamela McIntyre, Chief Accounting Officer of OneStream, Inc., reported selling 6,505 shares of Class A common stock at $23.58 per share on January 8, 2026. The filing states the transaction was executed under a Rule 10b5-1 trading plan adopted on December 8, 2025, indicating the sale followed a pre-set schedule rather than ad hoc timing.

Following the sale, she beneficially owned 58,847 shares, and the disclosure specifies that this figure includes unvested restricted stock units. That remaining position suggests continued exposure to the company’s equity and aligns with typical executive compensation structures. Overall, the event appears routine and administrative, without information in the excerpt that would clearly change an investment thesis.

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^*

McIntyre Pamela

(Last) (First) (Middle)

C/O ONESTREAM, INC.

191 N. CHESTER STREET

(Street)

BIRMINGHAM MI 48009

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
OneStream, Inc. [ OS ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
01/08/2026

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
Class A Common Stock	01/08/2026		S(1)		6,505	D	$23.58	58,847(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 sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 8, 2025.

2. The shares reported include unvested restricted stock units.

	/s/ Holly Koczot, attorney-in-fact	01/09/2026
	** 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

Who is the insider involved in this OneStream (OS) Form 4 filing?

The insider is Pamela McIntyre, who serves as Chief Accounting Officer of OneStream, Inc. and is listed as the sole reporting person.

How many OneStream (OS) shares did Pamela McIntyre sell and at what price?

Pamela McIntyre sold 6,505 shares of OneStream Class A common stock at a price of $23.58 per share on January 8, 2026.

Was the OneStream (OS) insider sale made under a Rule 10b5-1 trading plan?

Yes. The filing states the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by Pamela McIntyre on December 8, 2025.

How many OneStream (OS) shares does Pamela McIntyre own after the reported transaction?

After the reported sale, Pamela McIntyre beneficially owned 58,847 shares of OneStream Class A common stock, including unvested restricted stock units.

Does the OneStream (OS) Form 4 mention unvested restricted stock units?

Yes. A footnote explains that the shares reported include unvested restricted stock units, meaning part of her reported holdings is still subject to vesting conditions.

Is this OneStream (OS) insider sale classified as a direct or indirect holding?

The Form 4 marks the holding as Direct (D) beneficial ownership, with no separate entity described in the nature of indirect ownership field.