Planned sale of 60,000 OS Class A shares

A shareholder filed a notice to sell 60,000 Class A shares of OS, to be handled by Fidelity Brokerage Services LLC on or about 02/17/2026.

Accepted by SEC EDGAR 02/17/2026 - 03:09 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

A shareholder filed a notice to sell 60,000 Class A shares of OS, to be handled by Fidelity Brokerage Services LLC on or about 02/17/2026. The aggregate market value of this planned sale is listed as $1,407,600.00, and the shares trade on NASDAQ, with 90,268,494 Class A shares outstanding.

The shares to be sold were acquired by exercising stock options granted in 2022, 2023, and 2024, with exercises on 02/17/2026 for cash totaling 60,000 shares. In the prior three months, an individual named Kenneth D. Hohenstein sold 40,000 and 120,000 Class A shares on 11/17/2025 and 01/16/2026, for gross proceeds of $837,773.00 and $2,835,636.00, respectively.

FAQ

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

What OS share sale is disclosed in this Rule 144 notice?

The notice covers a planned sale of 60,000 Class A shares of OS. These shares are to be sold through Fidelity Brokerage Services LLC around 02/17/2026, with an indicated aggregate market value of $1,407,600.00.

What is the market value of OS shares planned for sale?

The planned sale of 60,000 OS Class A shares is shown with an aggregate market value of $1,407,600.00. This figure reflects the value used in the filing for the upcoming transaction on or about 02/17/2026.

How many OS shares are outstanding according to this filing?

The filing states there are 90,268,494 Class A shares outstanding. This number is provided as context alongside the planned Rule 144 sale of 60,000 shares and helps show the scale of the transaction relative to the total share count.

How were the OS shares being sold under Rule 144 acquired?

The 60,000 OS Class A shares were acquired via stock options granted on 06/30/2022, 03/06/2023, and 03/11/2024. These options were exercised for cash on 02/17/2026, resulting in acquisitions of 10,000, 10,000, and 40,000 shares.

What OS share sales occurred in the past three months before this notice?

The document lists Kenneth D. Hohenstein selling 40,000 Class A shares on 11/17/2025 for $837,773.00 and 120,000 Class A shares on 01/16/2026 for $2,835,636.00, both shown as gross proceeds.

Which broker and exchange are involved in the OS share sale?

The planned Rule 144 sale uses Fidelity Brokerage Services LLC as broker, with its address in Smithfield, Rhode Island. The Class A shares are listed for trading on the NASDAQ exchange, as specified in the securities information section.

Who is named in connection with recent OS share sales in this filing?

The section covering sales in the past three months identifies Kenneth D. Hohenstein, with a Birmingham, Michigan address, as the seller. He is reported to have sold 40,000 and 120,000 OS Class A shares on two separate dates with specified gross proceeds.

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

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002031265
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	OneStream, Inc.
SEC File Number	001-42187
Address of Issuer	191 N. CHESTER STREET BIRMINGHAM MICHIGAN 48009
Phone	(248) 650-1490
Name of Person for Whose Account the Securities are To Be Sold	Hohenstein Ken
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	60000	1407600.00	90268494	02/17/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A	02/17/2026	Option Granted 06/30/2022	Issuer			10000	02/17/2026	Cash
Class A	02/17/2026	Option Granted 03/06/2023	Issuer			10000	02/17/2026	Cash
Class A	02/17/2026	Option Granted 03/11/2024	Issuer			40000	02/17/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Kenneth D. Hohenstein 191 N. Chester Street Birmingham MI 48009	Class A	11/17/2025	40000	837773.00
Kenneth D. Hohenstein 191 N. Chester Street Birmingham MI 48009	Class A	01/16/2026	120000	2835636.00

144: Remarks and Signature

Remarks
Date of Notice	02/17/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	08/22/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Kenneth D Hohenstein
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)