STEM · Insider Trading
Stem, Inc.
Every open-market purchase and sale reported by STEM officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-29 | Michael James Carlson | President, Managed Services | MIXED | +159 | +$685 |
| 2026-08-11 | Laura D Tyson | Director | A | +7,486 | — |
| 2026-08-11 | Adam Daley | Director | M | +7,486 | — |
| 2026-08-11 | Ira M Birns | Director | M | +7,486 | — |
| 2026-08-11 | Anil Tammineedi | Director | M | +7,486 | — |
| 2026-08-11 | Krishna Shivram | Director | M | +7,486 | — |
| 2026-08-11 | Vasudevan Guruswamy | Director | M | +7,486 | — |
| 2026-08-11 | David S Buzby | Director | M | +7,486 | — |
| 2026-07-21 | Brian Musfeldt | Chief Financial Officer | MIXED | +2,379 | +$15.04K |
| 2026-07-02 | Arun Narayanan | Chief Executive Officer | MIXED | +6,129 | +$47.79K |
| 2026-07-02 | Michael James Carlson | President, Managed Services | MIXED | +6,403 | +$49.95K |
| 2026-07-02 | Matthew Tappin | President, Software Products | MIXED | +6,754 | +$52.71K |
| 2026-07-02 | Saul R. Laureles | Chief Legal Officer | MIXED | +7,075 | +$55.23K |
| 2026-06-04 | Krishna Shivram | Director | A | +12,168 deriv. | — |
| 2026-06-04 | Ira M Birns | Director | A | +12,168 deriv. | — |
| 2026-06-04 | Anil Tammineedi | Director | A | +12,168 deriv. | — |
| 2026-06-04 | Laura D Tyson | Director | A | +12,168 deriv. | — |
| 2026-06-04 | Adam Daley | Director | A | +12,168 deriv. | — |
| 2026-06-04 | Vasudevan Guruswamy | Director | A | +12,168 deriv. | — |
| 2026-06-04 | David S Buzby | Director | A | +12,168 deriv. | — |
| 2026-03-13 | Matthew Tappin | President, Software Products | Sell | −402 | −$4.35K |
| 2026-03-10 | Michael James Carlson | President, Managed Services | MIXED | +1,462 | −$23.12K |
| 2026-03-10 | Saul R. Laureles | Chief Legal Officer | MIXED | +1,974 | −$10.48K |
| 2026-03-10 | Matthew Tappin | President, Software Products | MIXED | +803 | −$7.28K |
| 2026-03-10 | Arun Narayanan | Chief Executive Officer | MIXED | +12,980 | −$57.21K |
| 2026-03-04 | Saul R. Laureles | Chief Legal Officer | Sell | −292 | −$2.82K |
| 2026-03-04 | Matthew Tappin | President, Software Products | Sell | −485 | −$4.75K |
| 2026-03-02 | Michael James Carlson | President, Managed Services | A | +43,000 deriv. | — |
| 2026-03-02 | Matthew Tappin | President, Software Products | M | +670 | — |
| 2026-03-02 | Brian Musfeldt | Chief Financial Officer | A | +43,000 deriv. | — |
| 2026-03-02 | Saul R. Laureles | Chief Legal Officer | M | +904 | — |
| 2026-03-02 | Arun Narayanan | Chief Executive Officer | A | +112,250 deriv. | — |
| 2026-02-23 | Matthew Tappin | President, Software Products | Sell | −366 | −$4.17K |
| 2026-02-19 | Saul R. Laureles | Chief Legal Officer | F | −536 | −$6.06K |
| 2026-02-19 | Michael James Carlson | President, Managed Services | F | −730 | −$8.25K |
| 2026-02-19 | Matthew Tappin | President, Software Products | F | −522 | −$5.90K |
| 2026-02-18 | Matthew Tappin | President, Software Products | M | +1,253 | — |
| 2026-02-18 | Saul R. Laureles | Chief Legal Officer | M | +1,790 | — |
| 2026-02-18 | Michael James Carlson | President, Managed Services | M | +1,342 | — |
| 2026-01-07 | Jeffrey T Cabot | Chief Accounting Officer | A | +14,000 deriv. | — |
| 2025-11-24 | Matthew Tappin | President, Software Products | Sell | −9,584 | −$169.64K |
| 2025-11-19 | Rahul Shukla | Chief Accounting Officer | Sell | −3,674 | −$59.56K |
| 2025-11-12 | Michael James Carlson | President, Managed Services | MIXED | +7,007 | −$123.19K |
| 2025-11-12 | Matthew Tappin | President, Software Products | MIXED | +9,584 | −$98.95K |
| 2025-11-12 | Rahul Shukla | Chief Accounting Officer | MIXED | +3,674 | −$37.93K |
| 2025-11-12 | Saul R. Laureles | Chief Legal Officer | MIXED | +10,371 | −$61.73K |
| 2025-10-02 | Brian Musfeldt | Chief Financial Officer | A | +10,500 deriv. | — |
| 2025-08-19 | Brian Musfeldt | Chief Financial Officer | A | +22,000 deriv. | — |
| 2025-07-30 | Michael James Carlson | See Remarks | A | +20,000 deriv. | — |
| 2025-07-30 | Matthew Tappin | PRESIDENT, SOFTWARE DIVISION | A | +20,000 deriv. | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Anil Tammineedi | Director | 229,965 | $692.19K |
| Saul R. Laureles | Chief Legal Officer | 34,525 | $103.92K |
| Michael James Carlson | President, Managed Services | 26,020 | $78.32K |
| Adam Daley | Director | 24,347 | $73.28K |
| Arun Narayanan | Chief Executive Officer | 19,109 | $57.52K |
| Laura D Tyson | Director | 15,473 | $46.57K |
| Ira M Birns | Director | 14,207 | $42.76K |
| David S Buzby | Director | 12,301 | $37.03K |
| Krishna Shivram | Director | 10,597 | $31.90K |
| Vasudevan Guruswamy | Director | 10,597 | $31.90K |
| Hofeldt Albert | Chief Technology Officer | 9,958 | $29.97K |
| Kim Homenock | Chief People Officer | 9,228 | $27.78K |
| Matthew Tappin | President, Software Products | 7,823 | $23.55K |
| Brian Musfeldt | Chief Financial Officer | 3,375 | $10.16K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the STEM quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.