STOCK TITAN

[Form 4] OneStream, Inc. Insider Trading Activity

Filing Impact
(Neutral)
Filing Sentiment
(Negative)
Form Type
4
Rhea-AI Filing Summary

On 08/04/2025, OneStream, Inc. (OS) director Jonathan D. Mariner reported selling 6,630 Class A common shares through a Rule 10b5-1 trading plan adopted on 02/28/2025. The weighted-average sale price was $23.53 (range: $23.095-$23.79). After the transaction, he beneficially owns 33,650 shares, which include unvested restricted stock units. No derivative securities were exercised or acquired.

The sale represents a modest portion of the director’s holdings and, because it was pre-scheduled, is generally viewed as routine liquidity management rather than a directional bet. Nonetheless, any insider disposition can prompt investor scrutiny regarding short-term valuation expectations.

Il 08/04/2025, il direttore di OneStream, Inc. (OS), Jonathan D. Mariner, ha comunicato la vendita di 6.630 azioni ordinarie di Classe A tramite un piano di trading conforme alla Regola 10b5-1 adottato il 28/02/2025. Il prezzo medio ponderato di vendita è stato di 23,53$ (intervallo: 23,095$-23,79$). Dopo la transazione, detiene beneficiariamente 33.650 azioni, comprensive di unità azionarie ristrette non ancora maturate. Non sono stati esercitati o acquisiti titoli derivati.

La vendita rappresenta una modesta porzione delle partecipazioni del direttore e, essendo stata pianificata in anticipo, è generalmente considerata una gestione ordinaria della liquidità piuttosto che una scommessa direzionale. Tuttavia, qualsiasi cessione da parte di un insider può suscitare l’attenzione degli investitori riguardo alle aspettative di valutazione a breve termine.

El 08/04/2025, el director de OneStream, Inc. (OS), Jonathan D. Mariner, informó la venta de 6,630 acciones comunes Clase A mediante un plan de negociación conforme a la Regla 10b5-1 adoptado el 28/02/2025. El precio promedio ponderado de venta fue de 23,53$ (rango: 23,095$-23,79$). Tras la transacción, posee beneficiosamente 33,650 acciones, que incluyen unidades restringidas de acciones no devengadas. No se ejercieron ni adquirieron valores derivados.

La venta representa una porción modesta de las participaciones del director y, al ser preprogramada, generalmente se considera una gestión rutinaria de liquidez en lugar de una apuesta direccional. No obstante, cualquier disposición por parte de un insider puede generar escrutinio por parte de los inversores respecto a las expectativas de valoración a corto plazo.

2025년 4월 8일, OneStream, Inc.(OS) 이사인 Jonathan D. Mariner는 2025년 2월 28일 채택된 Rule 10b5-1 거래 계획을 통해 6,630주의 클래스 A 보통주를 매도했다고 보고했습니다. 가중평균 매도 가격은 $23.53 (범위: $23.095-$23.79)이었습니다. 거래 후 그는 미확정 제한 주식 단위를 포함하여 33,650주를 실질적으로 보유하고 있습니다. 파생 증권은 행사되거나 취득되지 않았습니다.

이번 매도는 이사의 보유 지분 중 일부에 불과하며, 사전에 계획된 거래이기 때문에 일반적으로 방향성 베팅보다는 일상적인 유동성 관리로 간주됩니다. 그럼에도 불구하고 내부자의 매도는 단기 가치 평가 기대에 대해 투자자들의 주목을 받을 수 있습니다.

Le 08/04/2025, Jonathan D. Mariner, administrateur de OneStream, Inc. (OS), a déclaré la vente de 6 630 actions ordinaires de classe A dans le cadre d’un plan de négociation conforme à la règle 10b5-1 adopté le 28/02/2025. Le prix de vente moyen pondéré était de 23,53$ (plage : 23,095$-23,79$). Après la transaction, il détient bénéficiairement 33 650 actions, incluant des unités d’actions restreintes non acquises. Aucun titre dérivé n’a été exercé ou acquis.

Cette vente représente une part modeste des avoirs de l’administrateur et, puisqu’elle était programmée à l’avance, elle est généralement considérée comme une gestion courante de la liquidité plutôt qu’un pari directionnel. Néanmoins, toute cession par un initié peut susciter un examen attentif des investisseurs quant aux attentes de valorisation à court terme.

Am 08.04.2025 meldete Jonathan D. Mariner, Direktor von OneStream, Inc. (OS), den Verkauf von 6.630 Class-A-Stammaktien im Rahmen eines am 28.02.2025 angenommenen Rule 10b5-1-Handelsplans. Der gewichtete durchschnittliche Verkaufspreis lag bei 23,53$ (Spanne: 23,095$-23,79$). Nach der Transaktion besitzt er wirtschaftlich 33.650 Aktien, darunter nicht unverfallbare Restricted Stock Units. Es wurden keine Derivate ausgeübt oder erworben.

Der Verkauf stellt einen bescheidenen Teil der Beteiligungen des Direktors dar und wird aufgrund der Vorausplanung allgemein als routinemäßiges Liquiditätsmanagement und nicht als richtungsweisende Wette angesehen. Dennoch kann jede Insider-Veräußerung die Aufmerksamkeit der Anleger hinsichtlich kurzfristiger Bewertungserwartungen auf sich ziehen.

Positive
  • None.
Negative
  • None.

Insights

TL;DR: Small, pre-planned insider sale; neutral valuation signal with limited impact.

The 6,630-share disposition equates to roughly 4% of Mr. Mariner’s post-sale stake. At a $23.53 average price, proceeds are about $156k, immaterial to market cap and unlikely to alter fundamentals. The 10b5-1 structure reduces concerns about opportunistic timing, so I view the filing as informational rather than directional. Market reaction should be muted.

TL;DR: Governance-compliant 10b5-1 trade; minimal red flags.

Execution under a documented 10b5-1 plan aligns with best-practice disclosure, supporting transparency and mitigating insider-trading risk. Mariner remains a meaningful shareholder, preserving alignment with investors. Absent additional insider selling or adverse events, governance impact is neutral.

Il 08/04/2025, il direttore di OneStream, Inc. (OS), Jonathan D. Mariner, ha comunicato la vendita di 6.630 azioni ordinarie di Classe A tramite un piano di trading conforme alla Regola 10b5-1 adottato il 28/02/2025. Il prezzo medio ponderato di vendita è stato di 23,53$ (intervallo: 23,095$-23,79$). Dopo la transazione, detiene beneficiariamente 33.650 azioni, comprensive di unità azionarie ristrette non ancora maturate. Non sono stati esercitati o acquisiti titoli derivati.

La vendita rappresenta una modesta porzione delle partecipazioni del direttore e, essendo stata pianificata in anticipo, è generalmente considerata una gestione ordinaria della liquidità piuttosto che una scommessa direzionale. Tuttavia, qualsiasi cessione da parte di un insider può suscitare l’attenzione degli investitori riguardo alle aspettative di valutazione a breve termine.

El 08/04/2025, el director de OneStream, Inc. (OS), Jonathan D. Mariner, informó la venta de 6,630 acciones comunes Clase A mediante un plan de negociación conforme a la Regla 10b5-1 adoptado el 28/02/2025. El precio promedio ponderado de venta fue de 23,53$ (rango: 23,095$-23,79$). Tras la transacción, posee beneficiosamente 33,650 acciones, que incluyen unidades restringidas de acciones no devengadas. No se ejercieron ni adquirieron valores derivados.

La venta representa una porción modesta de las participaciones del director y, al ser preprogramada, generalmente se considera una gestión rutinaria de liquidez en lugar de una apuesta direccional. No obstante, cualquier disposición por parte de un insider puede generar escrutinio por parte de los inversores respecto a las expectativas de valoración a corto plazo.

2025년 4월 8일, OneStream, Inc.(OS) 이사인 Jonathan D. Mariner는 2025년 2월 28일 채택된 Rule 10b5-1 거래 계획을 통해 6,630주의 클래스 A 보통주를 매도했다고 보고했습니다. 가중평균 매도 가격은 $23.53 (범위: $23.095-$23.79)이었습니다. 거래 후 그는 미확정 제한 주식 단위를 포함하여 33,650주를 실질적으로 보유하고 있습니다. 파생 증권은 행사되거나 취득되지 않았습니다.

이번 매도는 이사의 보유 지분 중 일부에 불과하며, 사전에 계획된 거래이기 때문에 일반적으로 방향성 베팅보다는 일상적인 유동성 관리로 간주됩니다. 그럼에도 불구하고 내부자의 매도는 단기 가치 평가 기대에 대해 투자자들의 주목을 받을 수 있습니다.

Le 08/04/2025, Jonathan D. Mariner, administrateur de OneStream, Inc. (OS), a déclaré la vente de 6 630 actions ordinaires de classe A dans le cadre d’un plan de négociation conforme à la règle 10b5-1 adopté le 28/02/2025. Le prix de vente moyen pondéré était de 23,53$ (plage : 23,095$-23,79$). Après la transaction, il détient bénéficiairement 33 650 actions, incluant des unités d’actions restreintes non acquises. Aucun titre dérivé n’a été exercé ou acquis.

Cette vente représente une part modeste des avoirs de l’administrateur et, puisqu’elle était programmée à l’avance, elle est généralement considérée comme une gestion courante de la liquidité plutôt qu’un pari directionnel. Néanmoins, toute cession par un initié peut susciter un examen attentif des investisseurs quant aux attentes de valorisation à court terme.

Am 08.04.2025 meldete Jonathan D. Mariner, Direktor von OneStream, Inc. (OS), den Verkauf von 6.630 Class-A-Stammaktien im Rahmen eines am 28.02.2025 angenommenen Rule 10b5-1-Handelsplans. Der gewichtete durchschnittliche Verkaufspreis lag bei 23,53$ (Spanne: 23,095$-23,79$). Nach der Transaktion besitzt er wirtschaftlich 33.650 Aktien, darunter nicht unverfallbare Restricted Stock Units. Es wurden keine Derivate ausgeübt oder erworben.

Der Verkauf stellt einen bescheidenen Teil der Beteiligungen des Direktors dar und wird aufgrund der Vorausplanung allgemein als routinemäßiges Liquiditätsmanagement und nicht als richtungsweisende Wette angesehen. Dennoch kann jede Insider-Veräußerung die Aufmerksamkeit der Anleger hinsichtlich kurzfristiger Bewertungserwartungen auf sich ziehen.

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*
MARINER JONATHAN D

(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)
X Director 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
08/04/2025
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 08/04/2025 S(1) 6,630 D $23.53(2) 33,650(3) 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 February 28, 2025.
2. Represents the weighted average share price of an aggregate total of 6,630 shares sold in the price range of $23.095 to $23.79, inclusive, by the Reporting Person. The Reporting Person undertakes to provide upon request by the staff of the Securities and Exchange Commission, the issuer or any security holder of the issuer, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.
3. The shares reported include unvested restricted stock units.
/s/ Holly Koczot, attorney-in-fact 08/06/2025
** 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

How many OneStream (OS) shares did Jonathan D. Mariner sell?

He sold 6,630 Class A common shares on 08/04/2025.

What was the sale price for the OS shares?

The weighted-average price was $23.53, within a $23.095-$23.79 range.

Does the director still hold OneStream stock after the sale?

Yes, he now beneficially owns 33,650 shares, including unvested RSUs.

Was the transaction conducted under a 10b5-1 plan?

Yes, the plan was adopted on 02/28/2025.

What is Jonathan D. Mariner’s role at OneStream?

He serves as a Director on the company’s board.

Were any derivative securities involved in this Form 4?

No, the filing reports only a sale of common shares; no derivatives were exercised or disposed.
ONESTREAM INC

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