NASDAQ: OS
Onestream Inc Stock Ownership - Who owns Onestream?

Insider buying vs selling

Have Onestream Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Thomas Anthony SheaCEO and President2025-06-119,913$28.23
$279.84kSell
Ken HohensteinChief Revenue Officer2025-06-116,280$28.23
$177.28kSell
William A. KoefoedChief Financial Officer2025-06-116,501$28.23
$183.52kSell
Craig ColbyInsider2025-06-116,279$28.23
$177.26kSell
Jonathan D. MarinerDirector2025-06-026,631$27.90
$185.00kSell
William A. KoefoedChief Financial Officer2025-05-2725,000$10.65
$266.25kBuy
William A. KoefoedChief Financial Officer2025-05-2725,000$28.76
$719.00kSell
Ken HohensteinChief Revenue Officer2025-05-1920,000$27.67
$553.40kSell
Ken HohensteinChief Revenue Officer2025-05-1920,000$10.65
$213.00kBuy
Craig Colby10% Owner2025-05-09223,869$10.65
$2.38MBuy

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Net Insider Buy/Sell (L12M) Ownership

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OS Shareholders

What type of owners hold Onestream Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
T Rowe Price Investment Management Inc3.73%8,937,682$245.88MInstitution
Kayne Anderson Rudnick Investment Management LLC2.66%6,378,130$175.46MInstitution
Champlain Investment Partners LLC1.69%4,037,595$111.07MInstitution
Darlington Partners Capital Management LP1.60%3,839,405$105.62MInstitution
Vanguard Group Inc1.50%3,591,453$98.80MInstitution
Temasek Holdings Private Ltd1.23%2,956,360$81.33MInstitution
Alliancebernstein LP1.19%2,847,280$78.33MInstitution
Timessquare Capital Management LLC1.13%2,699,645$74.27MInstitution
Ken Hohenstein1.08%2,583,721$71.08MInsider
Alkeon Capital Management LLC1.05%2,526,261$69.50MInstitution

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Onestream Stock Ownership FAQ

Who owns Onestream?

Onestream (NASDAQ: OS) is owned by 26.58% institutional shareholders, 1.58% Onestream insiders, and 71.84% retail investors. Ken Hohenstein is the largest individual Onestream shareholder, owning 2.58M shares representing 1.08% of the company. Ken Hohenstein's Onestream shares are currently valued at $71.08M.

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