STEM
STEM, INC.
Services-Computer Integrated Systems DesignNYSEAccelerated filer<br>Smaller reporting company
Total Trades
132
Buys
3
Sells
89
Largest Trade
N/A
Insiders
18
Institutional Funds
62
Inst. Value
$1M+
Activist Filings
11
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Carrington John Eugene | CEO and Director | SELL | $500K+ | 57K | $16.60 | Sep 15, 2022 |
| BUZBY DAVID S | Director | SELL | $500K+ | 50K | $16.21 | Sep 12, 2022 |
| Tammineedi Anil | Director | SELL | $1M+ | 300K | $15.91 | Sep 9, 2022 |
| Tammineedi Anil | Director | SELL | $500K+ | 50K | $16.11 | Aug 22, 2022 |
| BUZBY DAVID S | Director | SELL | $1M+ | 67K | $15.51 | Aug 19, 2022 |
| Carrington John Eugene | CEO and Director | SELL | $500K+ | 57K | $15.54 | Aug 18, 2022 |
| BUSH WILLIAM JOHN | CFO | SELL | $1M+ | 84K | $16.18 | Aug 17, 2022 |
| Homenock Kim | Chief People Officer | SELL | $1K–$15K | 925 | $15.98 | Aug 17, 2022 |
| Tammineedi Anil | Director | SELL | $1M+ | 100K | $15.87 | Aug 16, 2022 |
| Johnson larsh | CTO | SELL | $500K+ | 60K | $15.86 | Aug 16, 2022 |
| Tammineedi Anil | Director | SELL | $500K+ | 50K | $15.00 | Aug 12, 2022 |
| Daley Adam | Director | SELL | $1M+ | 150K | $14.92 | Aug 12, 2022 |
| Laureles Saul R. | Chief Legal Officer | SELL | $100K–$500K | 14K | $15.00 | Aug 11, 2022 |
| Russo Alan | Chief Revenue Offi… | SELL | $1M+ | 160K | $14.70 | Aug 11, 2022 |
| Russo Alan | Chief Revenue Offi… | EXERCISE | $100K–$500K | 114K | $3.54 | Aug 11, 2022 |
| Carrington John Eugene | CEO and Director | SELL | $500K+ | 57K | $9.04 | Jul 22, 2022 |
| Carrington John Eugene | CEO and Director | SELL | $500K+ | 57K | $9.17 | Jun 10, 2022 |
| Carrington John Eugene | CEO and Director | SELL | $100K–$500K | 57K | $7.61 | May 23, 2022 |
| BUSH WILLIAM JOHN | CFO | SELL | $100K–$500K | 37K | $7.62 | May 19, 2022 |
| Carrington John Eugene | CEO and Director | SELL | $15K–$50K | 5K | $7.32 | May 12, 2022 |
| BUSH WILLIAM JOHN | CFO | SELL | $15K–$50K | 2K | $7.32 | May 12, 2022 |
| Laureles Saul R. | Chief Legal Officer | SELL | $15K–$50K | 6K | $7.32 | May 12, 2022 |
| Patel Prakesh | Chief Strategy Off… | SELL | $1K–$15K | 1K | $7.32 | May 12, 2022 |
| Russo Alan | Chief Revenue Offi… | SELL | $1K–$15K | 2K | $7.32 | May 12, 2022 |
| Johnson larsh | CTO | SELL | $1K–$15K | 1K | $7.32 | May 12, 2022 |
| MORGAN MICHAEL C | Director | BUY | $1M+ | 150K | $7.62 | Mar 17, 2022 |
| Tammineedi Anil | Director | SELL | $1M+ | 150K | $8.30 | Mar 16, 2022 |
| Tammineedi Anil | Director | SELL | $500K+ | 100K | $8.23 | Mar 14, 2022 |
| BUZBY DAVID S | Director | SELL | $500K+ | 86K | $9.01 | Mar 9, 2022 |
| Triplett Mark William | COO | SELL | $50K–$100K | 5K | $12.11 | Feb 3, 2022 |
| Triplett Mark William | COO | SELL | $50K–$100K | 5K | $14.27 | Jan 20, 2022 |
| Triplett Mark William | COO | SELL | $50K–$100K | 5K | $19.22 | Jan 6, 2022 |
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Institutional Ownership
13F filings as of Dec 31, 2025 · 62 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| GSA CAPITAL PARTNERS LLP | 79K | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 71K | $1M+ | SH |
| VANGUARD GROUP INC | 50K | $500K+ | SH |
| STATE STREET CORP | 38K | $500K+ | SH |
| GOLDMAN SACHS GROUP INC | 36K | $500K+ | SH |
| CITIGROUP INC | 34K | $500K+ | SH |
| DnB Asset Management AS | 32K | $100K–$500K | SH |
| COHEN & STEERS, INC. | 32K | $100K–$500K | SH |
| WOLVERINE ASSET MANAGEMENT LLC | 29K | $100K–$500K | SH (Put) |
| Keyframe Capital Partners, L.P. | 26K | $100K–$500K | SH |
| HSBC HOLDINGS PLC | 24K | $100K–$500K | SH |
| Walleye Capital LLC | 24K | $100K–$500K | SH |
| JANE STREET GROUP, LLC | 20K | $100K–$500K | SH (Call) |
| BNP PARIBAS FINANCIAL MARKETS | 19K | $100K–$500K | SH |
| PEAK6 LLC | 19K | $100K–$500K | SH (Call) |
| HighTower Advisors, LLC | 16K | $100K–$500K | SH |
| MARSHALL WACE, LLP | 16K | $100K–$500K | SH |
| Skaana Management L.P. | 15K | $100K–$500K | SH (Call) |
| OMERS ADMINISTRATION Corp | 13K | $100K–$500K | SH |
| NOMURA HOLDINGS INC | 12K | $100K–$500K | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Jul 29, 2025
4.6%
387K shares
SC 13G/A · Jul 18, 2025
2.1%
178K shares
SC 13G/A · Nov 12, 2024
5.3%
8.7M shares
SC 13G/A · Nov 4, 2024
5.3%
8.7M shares
SC 13G/A · Nov 4, 2024
5.3%
8.7M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
7.1%
11.1M shares
Schroder Investment Management Limited
SC 13G · Feb 13, 2024
6.8%
10.6M shares
SC 13G/A · Jan 26, 2024
7.3%
11.4M shares
SC 13G · Feb 3, 2023
6.2%
9.6M shares
Park West Asset Management LLC
SC 13G/A · Feb 14, 2022
0.0%
0 shares
SC 13G/A · Feb 14, 2022
0.0%
134K shares