OneStream, Inc.
Total Trades
54
Buys
0
Sells
42
Largest Trade
$1M+
Insiders
13
Institutional Funds
141
Inst. Value
$1M+
Activist Filings
34
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| KKR Dream Holdings LLC | 10% Owner | SELL | $1M+ | 6.4M | $29.99 | Nov 19, 2024 |
| MARINER JONATHAN D | Director | SELL | $1M+ | 38K | $31.00 | Nov 19, 2024 |
| Burkland Michael | Director | SELL | $1M+ | 64K | $31.00 | Nov 19, 2024 |
| WILSON KARA | Director | SELL | $1M+ | 38K | $31.00 | Nov 19, 2024 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 141 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| NORGES BANK | 6.0M | $1M+ | SH |
| DARLINGTON PARTNERS CAPITAL MANAGEMENT, LP | 3.8M | $1M+ | SH |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | 2.9M | $1M+ | SH |
| TimesSquare Capital Management, LLC | 2.7M | $1M+ | SH |
| FULLER & THALER ASSET MANAGEMENT, INC. | 2.6M | $1M+ | SH |
| FULLER & THALER ASSET MANAGEMENT, INC. | 2.6M | $1M+ | SH |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 121K | $1M+ | SH |
| Champlain Investment Partners, LLC | 2.1M | $1M+ | SH |
| WASATCH ADVISORS LP | 1.3M | $1M+ | SH |
| AMERICAN CENTURY COMPANIES INC | 1.3M | $1M+ | SH |
| Neuberger Berman Group LLC | 1.3M | $1M+ | SH |
| MOORE CAPITAL MANAGEMENT, LP | 1.2M | $1M+ | SH |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 1.1M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 895K | $1M+ | SH |
| FEDERATED HERMES, INC. | 850K | $1M+ | SH |
| STATE STREET CORP | 753K | $1M+ | SH |
| MARSHALL WACE, LLP | 637K | $1M+ | SH |
| Clearbridge Investments, LLC | 614K | $1M+ | SH |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 600K | $1M+ | SH |
| Alyeska Investment Group, L.P. | 530K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 13, 2026
16.3%
18.2M shares
Kayne Anderson Rudnick Investment Management, LLC
SC 13G/A · Feb 13, 2026
5.4%
4.9M shares
Champlain Investment Partners, LLC
SC 13G · Feb 12, 2026
3.3%
2.9M shares
SC 13G · Feb 9, 2026
6.8%
6.2M shares
SC 13G/A · Jan 26, 2026
6.6%
6.0M shares
Kayne Anderson Rudnick Investment Management, LLC
SC 13G/A · Nov 13, 2025
7.0%
6.2M shares
SC 13G/A · Nov 3, 2025
9.7%
8.5M shares
SC 13G/A · Jul 28, 2025
8.4%
6.3M shares
SC 13G/A · Jul 7, 2025
10.4%
7.8M shares
SC 13G/A · May 14, 2025
10.9%
9.1M shares
SC 13G/A · May 14, 2025
3.9%
2.8M shares
SC 13G/A · May 14, 2025
3.5%
2.5M shares
Kayne Anderson Rudnick Investment Management, LLC
SC 13G/A · May 14, 2025
8.5%
6.2M shares
Champlain Investment Partners, LLC
SC 13G · May 14, 2025
5.5%
4.0M shares
SC 13G/A · Apr 30, 2025
4.9%
3.6M shares
Darlington Partners Capital Management, LP
SC 13G · Mar 25, 2025
5.3%
3.8M shares
T. Rowe Price Investment Management, Inc.
SC 13G/A · Feb 14, 2025
8.3%
3.8M shares
SC 13G/A · Feb 13, 2025
3.8%
2.1M shares
Champlain Investment Partners, LLC
SC 13G · Feb 13, 2025
7.6%
3.4M shares
SC 13G/A · Feb 12, 2025
50.2%
45.8M shares
T. Rowe Price Investment Management, Inc.
SC 13G/A · Feb 7, 2025
11.4%
5.2M shares
SC 13G · Feb 5, 2025
5.4%
2.5M shares
SC 13G · Dec 9, 2024
5.8%
2.8M shares
T. Rowe Price Investment Management, Inc. 85-4328500
SC 13G/A · Nov 14, 2024
13.0%
3.7M shares
SC 13G · Nov 14, 2024
65.1%
52.7M shares
SC 13G · Nov 13, 2024
10.0%
4.9M shares
SC 13G · Nov 12, 2024
37.8%
17.2M shares
SC 13G · Nov 12, 2024
6.1%
1.8M shares
SC 13G · Nov 12, 2024
30.7%
12.5M shares
SC 13G/A · Nov 12, 2024
8.8%
2.5M shares
SC 13G/A · Nov 4, 2024
8.8%
2.5M shares
NORGES BANK (THE CENTRAL BANK OF NORWAY)
SC 13G · Oct 15, 2024
9.5%
Kayne Anderson Rudnick Investment Management, LLC 95-4575414
SC 13G · Oct 7, 2024
14.9%
4.2M shares
T. Rowe Price Investment Management, Inc. 85-4328500
SC 13G · Aug 12, 2024
15.0%
3.7M shares