OneStream (OS) Chief Revenue Officer granted 45,000 RSUs, holds over 1.8M shares

Rhea-AI Filing Summary

Hohenstein Ken reported acquisition or exercise transactions in this Form 4 filing.

OneStream, Inc. Chief Revenue Officer Ken Hohenstein received a grant of 45,000 shares of Class A Common Stock in the form of restricted stock units. The RSUs vest in equal installments of 1/8 of the grant on each Quarterly Vesting Date starting on June 10, 2026, as long as he continues as a service provider. Quarterly Vesting Dates are March 10, June 10, September 10 and December 10 each year. Following this award, Hohenstein directly holds 1,030,571 shares of Class A Common Stock, which include unvested RSUs. He also has indirect ownership of 790,279 shares held by the Hohenstein Purple Elephant 2019 Irrevocable Grantor Trust, over which he may be deemed to have voting and dispositive power.

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

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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^*

Hohenstein Ken

(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 Revenue 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	1,030,571(2)	D
Class A Common Stock								790,279	I	See Footnote(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)
				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.

3. Shares held by the Hohenstein Purple Elephant 2019 Irrevocable Grantor Trust (the "Hohenstein Purple Elephant Trust"). The Reporting Person may be deemed to have voting and dispositive power over the shares held by the Hohenstein Purple Elephant Trust.

	/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 did OneStream (OS) insider Ken Hohenstein report on this Form 4?

Ken Hohenstein reported receiving 45,000 restricted stock units of OneStream Class A Common Stock. These RSUs were granted at no cash cost and represent a compensation award that vests over time, aligning his incentives with long-term shareholder value.

How do Ken Hohenstein’s new OneStream RSUs vest over time?

The 45,000 RSUs vest in eight equal installments of 1/8 of the grant. Vesting occurs on Quarterly Vesting Dates beginning June 10, 2026, and then on March 10, June 10, September 10, and December 10 each year, conditioned on continued service.

How many OneStream shares does Ken Hohenstein hold after this grant?

After the grant, Ken Hohenstein directly holds 1,030,571 shares of OneStream Class A Common Stock, including unvested RSUs. The filing also shows 790,279 shares held indirectly through the Hohenstein Purple Elephant 2019 Irrevocable Grantor Trust, where he may have voting and dispositive power.

What is the nature of the OneStream shares held through the Hohenstein Purple Elephant Trust?

790,279 OneStream Class A Common shares are held by the Hohenstein Purple Elephant 2019 Irrevocable Grantor Trust. The filing states Hohenstein may be deemed to have voting and dispositive power over these trust shares, so they are reported as indirect ownership on the Form 4.

Are the shares in Ken Hohenstein’s Form 4 all fully vested OneStream stock?

No, the reported holdings include unvested restricted stock units. The filing specifies that the 45,000 RSU award and other RSUs are included, and these convert into OneStream Class A Common Stock only as they vest according to the stated vesting schedule.