Johnson Fistel Investigates OneStream, Inc. (OS) Shareholders’ Rights Following Board Approval of $24.00 Take-Private Transaction

SAN DIEGO, Jan. 21, 2026 (GLOBE NEWSWIRE) -- Shareholder rights law firm Johnson Fistel, PLLP has launched an investigation into whether the board members of OneStream, Inc. (NASDAQ: OS) breached their fiduciary duties in connection with the proposed take-private transaction led by Hg Capital, with minority participation from General Atlantic and Tidemark.

On January 6, 2026, OneStream disclosed that it had approved a transaction under which the Company would be taken private in an all-cash deal valued at approximately $6.4 billion, with public shareholders to receive $24.00 per share. As part of the transaction, existing ownership interests, including those held by certain large stockholders, will be monetized. Johnson Fistel is examining whether the process leading to this transaction was fair to public shareholders and whether any officers, directors, or affiliated parties stood to receive benefits not shared proportionately with other investors.

If you own OneStream shares and believe the proposed transaction may not fully reflect the Company’s value, you are encouraged to participate in our investigation. To learn more or to join, please click or copy and paste the following link: https://www.johnsonfistel.com/investigations/onestream-inc/

Shareholders seeking more information may also contact lead analyst James Baker at jimb@johnsonfistel.com or by telephone at (619) 814-4471. If emailing, please include a phone number.

About Johnson Fistel, PLLP | Top Law Firm – Securities Fraud & Investor Rights
Johnson Fistel, PLLP is a nationally recognized shareholder-rights law firm with offices in California, New York, Georgia, Idaho, and Colorado. The firm represents individual and institutional investors in shareholder derivative and securities class action lawsuits and also assists foreign investors who purchased shares on U.S. exchanges. To learn more, visit www.johnsonfistel.com.

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In 2024, Johnson Fistel was ranked among the Top 10 Plaintiff Law Firms by ISS Securities Class Action Services. This recognition reflects the firm’s effectiveness in advocating for investors, having recovered approximately $90,725,000 for aggrieved clients in cases where it served as lead or co-lead counsel. This marks the eighth time the firm has been recognized as a top plaintiffs’ securities law firm in the United States, based on the total dollar value of final recoveries.

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Contact
Johnson Fistel, PLLP
501 W. Broadway, Suite 800
San Diego, CA 92101
James Baker, Investor Relations – or – Frank J. Johnson, Esq.
(619) 814-4471 | jimb@johnsonfistel.com | fjohnson@johnsonfistel.com

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