Companies / Onestream, Inc.
Onestream, Inc.
OSCIK 1889956BIRMINGHAM, MI
Financials · FY2025
Ownership
247.6M shares outstanding · as of Mar 24, 2026
Ownership
Share classes
| Class A | 41.01% | |
| Class D | 36.49% | |
| Class C | 22.50% |
| Insiders | 0.80% | 1,969,815 |
| 10%+ / strategic | 8.84% | 21,881,380 |
| Institutions | 30.80% | 76,245,875 |
| Public float | 59.57% | 147,464,181 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 16
View all →| Insider | % of shares | Shares |
|---|---|---|
Hohenstein KenChief Revenue Officer | 0.42% | 1,030,571 |
Thomas Anthony SheaCEOCEO · Director · 10% owner | 0.19% | 459,986 |
Leshinski ScottPresident | 0.15% | 378,458 |
McIntyre PamelaChief Accounting Officer | 0.04% | 100,800 |
Mariner Jonathan DDirector | 0.00% | 0 |
KKR & Co. GP LLC10% owner | — | — |
KKR & Co. Inc.10% owner | — | — |
KKR Group Co. Inc.10% owner | — | — |
KKR Group Holdings Corp.10% owner | — | — |
KKR Group Partnership L.P.10% owner | — | — |
Institutional holders 205
View all →| Holder | Value | % of shares |
|---|---|---|
| $157.71M | 3.47% | |
| $109.80M | 2.41% | |
| $102.40M | 1.72% | |
| $81.44M | 1.37% | |
| $70.67M | 1.19% | |
| $70.57M | 1.55% | |
| $62.06M | 1.36% | |
| $59.31M | 1.00% | |
| $49.04M | 1.08% | |
| $47.65M | 1.05% |
Activity
Mar 31, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q1 2026 as of | Kayne Anderson Rudnick Investment Management, LLC 13F manager | Trim | — | $-116.82M | -4.9M -100.00% | 67 <0.01% of shares | high |
| Q1 2026 as of | Norges Bank 13F manager | Exit | — | $-109.80M | -6.0M -100.00% | — | high |
| Q2 2026 as of | Temasek Holdings (Private) Limited 13F manager | Exit | — | $-102.40M | -4.3M -100.00% | — | high |
| Q1 2026 as of | AQR Arbitrage LLC 13F manager | New | — | $81.44M | +3.4M | 3,393,367 1.37% of shares | high |
| Q1 2026 as of | Polar Asset Management Partners Inc. 13F manager | New | — | $70.67M | +2.9M | 2,944,378 1.19% of shares | high |
| Q1 2026 as of | Brown Advisory Inc 13F manager | Exit | — | $-62.06M | -3.4M -100.00% | — | high |
| Q1 2026 as of | Millennium Management LLC 13F manager | Add | — | $51.25M | +2.1M +636.37% | 2,471,107 1.00% of shares | high |
| Q1 2026 as of | TimesSquare Capital Management, LLC 13F manager | Exit | — | $-49.04M | -2.7M -100.00% | — | medium |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Kayne Anderson Rudnick Investment Management, LLC | Passive13G/A | — |
| Vanguard Group Inc | Passive13G/A | — |
| Glazer Capital, LLC | Passive13G | — |
| Champlain Investment Partners, LLC | Passive13G | — |
| Norges Bank | Passive13G/A | — |
| Thomas Anthony Shea | Passive13G/A | — |
| T. Rowe Price Investment Management, Inc. | Passive13G/A | — |
| Kayne Anderson Rudnick Investment Management, LLC | Passive13G/A | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| OS | — | 68278B107 |