OneStream (OS) grants CAO Pamela McIntyre 45,000 RSUs

Rhea-AI Filing Summary

McIntyre Pamela reported acquisition or exercise transactions in this Form 4 filing.

OneStream, Inc. reported that Chief Accounting Officer Pamela McIntyre received a grant of 45,000 shares of Class A Common Stock in the form of restricted stock units. The award was priced at $0.00 per share as a compensation grant, not an open-market purchase.

Each RSU represents one share of Class A Common Stock upon vesting. The RSUs will vest in eight equal quarterly installments starting on June 10, 2026, on March 10, June 10, September 10, and December 10 each year, contingent on her continued service. Following this grant, she holds 100,800 shares, including unvested RSUs.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider McIntyre Pamela

Role Chief Accounting Officer

Type	Security	Shares	Price	Value
Grant/Award	Class A Common Stock	45,000	$0.00	--

Holdings After Transaction: Class A Common Stock — 100,800 shares (Direct)

Footnotes (1)

1. Represents an equal number of restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock on the date it vests. The RSUs will vest as to 1/8th of the shares subject to the RSUs on each Quarterly Vesting Date (defined below) beginning on June 10, 2026, subject to the Reporting Person continuing to be a service provider through such date. "Quarterly Vesting Date" means March 10, June 10, September 10 and December 10 of each year. The shares reported include unvested restricted stock units.

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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).

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 MICHIGAN 48009

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/19/2026

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
Class A Common Stock	03/19/2026		A		45,000(1)	A	$0	100,800(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. Represents an equal number of restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock on the date it vests. The RSUs will vest as to 1/8th of the shares subject to the RSUs on each Quarterly Vesting Date (defined below) beginning on June 10, 2026, subject to the Reporting Person continuing to be a service provider through such date. "Quarterly Vesting Date" means March 10, June 10, September 10 and December 10 of each year.

2. The shares reported include unvested restricted stock units.

	/s/ Holly Koczot, attorney-in-fact	03/20/2026
	** 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 OneStream (OS) report for Pamela McIntyre?

OneStream reported that Chief Accounting Officer Pamela McIntyre received a grant of 45,000 restricted stock units. Each RSU represents one share of Class A Common Stock, awarded at $0.00 per share as part of her equity compensation.

How many OneStream (OS) shares does Pamela McIntyre hold after this Form 4?

After the grant, Pamela McIntyre is reported to beneficially own 100,800 shares of Class A Common Stock. This total includes both vested and unvested restricted stock units disclosed in the filing’s ownership table and accompanying footnotes.

What are the vesting terms of Pamela McIntyre’s 45,000 OneStream (OS) RSUs?

The 45,000 RSUs vest in eight equal installments, with 1/8 of the units vesting on each Quarterly Vesting Date beginning June 10, 2026. Quarterly Vesting Dates are March 10, June 10, September 10, and December 10, subject to her continued service.

Is Pamela McIntyre’s OneStream (OS) Form 4 transaction a market purchase or sale?

The Form 4 reports a compensation-related grant coded as “A,” meaning a grant, award, or other acquisition. The 45,000 RSUs were awarded at $0.00 per share and do not reflect an open-market purchase or sale of OneStream stock.

How do the OneStream (OS) RSUs reported for Pamela McIntyre work?

Each restricted stock unit represents a contingent right to receive one share of OneStream Class A Common Stock when it vests. The units convert into shares according to the quarterly vesting schedule, assuming she remains a service provider through each vesting date.

Does Pamela McIntyre’s OneStream (OS) Form 4 include unvested RSUs in her holdings?

Yes. A footnote clarifies that the reported share total of 100,800 includes unvested restricted stock units. This means her disclosed beneficial ownership reflects both currently vested shares and RSUs that will vest over time if conditions are met.