Stem, Inc. (STEM) Insider Trading
Over the last 3 months, STEM insiders made 0 open-market buys and 5 sales, a net sale of -$45K (SEC Form 4). Over the last 6 months, 34 institutions increased and 47 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
5
Net (3m)
-$45.4K
Insider trades by month Buys Sells
May
Jun
Nov
Feb
Mar
Jul
Context3-month price -44.4%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 11, 2026 | TYSON LAURA Ddirector | Option | 7,486 | — |
| Aug 11, 2026 | Tammineedi Anildirector | Option | 7,486 | — |
| Aug 11, 2026 | BUZBY DAVID Sdirector | Option | 7,486 | — |
| Aug 11, 2026 | Daley Adamdirector | Option | 7,486 | — |
| Aug 11, 2026 | TYSON LAURA Ddirector | Grant | 7,486 | — |
| Aug 11, 2026 | Birns Ira Mdirector | Option | 7,486 | — |
| Aug 11, 2026 | Guruswamy Vasudevandirector | Option | 7,486 | — |
| Aug 11, 2026 | Shivram Krishnadirector | Option | 7,486 | — |
| Jul 21, 2026 | Musfeldt Brianofficer: Chief Financial Officer | Sell | 996 | $6.11 |
| Jul 21, 2026 | Musfeldt Brianofficer: Chief Financial Officer | Option | 3,375 | $6.26 |
| Jul 2, 2026 | Carlson Michael Jamesofficer: President, Managed Services | Sell | 1,347 | $7.85 |
| Jul 2, 2026 | Carlson Michael Jamesofficer: President, Managed Services | Option | 5,000 | $7.81 |
| Jul 2, 2026 | Tappin Matthewofficer: President, Software Products | Option | 5,000 | $7.81 |
| Jul 2, 2026 | Tappin Matthewofficer: President, Software Products | Sell | 996 | $7.85 |
| Jul 2, 2026 | Laureles Saul R.officer: Chief Legal Officer | Option | 5,000 | $7.81 |
| Jul 2, 2026 | Narayanan Arunofficer: Chief Executive Officer | Sell | 1,996 | $7.85 |
| Jul 2, 2026 | Tappin Matthewofficer: President, Software Products | Option | 2,750 | $7.81 |
| Jul 2, 2026 | Laureles Saul R.officer: Chief Legal Officer | Sell | 675 | $7.85 |
| Jul 2, 2026 | Carlson Michael Jamesofficer: President, Managed Services | Option | 2,750 | $7.81 |
| Jul 2, 2026 | Narayanan Arunofficer: Chief Executive Officer | Option | 8,125 | $7.81 |
| Jul 2, 2026 | Laureles Saul R.officer: Chief Legal Officer | Option | 2,750 | $7.81 |
| Jun 4, 2026 | Tammineedi Anildirector | Grant | 12,168 | — |
| Jun 4, 2026 | Shivram Krishnadirector | Grant | 12,168 | — |
| Jun 4, 2026 | Guruswamy Vasudevandirector | Grant | 12,168 | — |
| Jun 4, 2026 | BUZBY DAVID Sdirector | Grant | 12,168 | — |
| Jun 4, 2026 | TYSON LAURA Ddirector | Grant | 12,168 | — |
| Jun 4, 2026 | Daley Adamdirector | Grant | 12,168 | — |
| Jun 4, 2026 | Birns Ira Mdirector | Grant | 12,168 | — |
| Mar 13, 2026 | Tappin Matthewofficer: President, Software Products | Sell | 402 | $10.83 |
| Mar 10, 2026 | Carlson Michael Jamesofficer: President, Managed Services | Option | 3,541 | — |
Source: STEM SEC Form 4 filings, latest Aug 11, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their STEM positions over the last 6 months (SEC Form 13F).
Increased
34
New positions
22
Reduced
47
Sold out
15
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| MARSHALL WACE, LLP | Increased | 406K | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 361K | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 344K | May 15, 2026 |
| MARSHALL WACE, LLP | Increased | 291K | May 15, 2026 |
| TWO SIGMA INVESTMENTS, LP | Increased | 175K | May 15, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 173K | May 15, 2026 |
| BlackRock, Inc. | Increased | 164K | Aug 7, 2026 |
| BLACKROCK, INC. | Reduced | 135K | May 13, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 114K | Aug 14, 2026 |
| Trexquant Investment LP | Increased | 111K | Aug 14, 2026 |
| GSA CAPITAL PARTNERS LLP | Increased | 109K | May 8, 2026 |
| TWO SIGMA INVESTMENTS, LP | Reduced | 103K | Aug 14, 2026 |
| GSA CAPITAL PARTNERS LLP | Reduced | 102K | Aug 6, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 93K | Aug 13, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 93K | Aug 12, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.