STEM insider buying and SEC filings, explained
Stem, Inc. · CIK 1758766
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$385K
Planned sales (10b5-1)
$4K
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Sep 29, 2026 | Sale | Michael James Carlson (President / COO) sold 146 shares at $4.67 ($682). Holdings down 1% to 26,020 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 29, 2026 |
| Jul 20, 2026 | Sale | Brian Musfeldt (CFO) sold 996 shares at $6.11 ($6K). Holdings down 30% to 2,379 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 21, 2026 |
| Jul 2, 2026 | Sale | Arun Narayanan (CEO) sold 1,996 shares at $7.85 ($16K). Holdings down 9% to 19,109 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 2, 2026 |
| Jul 2, 2026 | Sale | Matthew Tappin (President / COO) sold 996 shares at $7.85 ($8K). Holdings down 9% to 9,577 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 2, 2026 |
| Jul 2, 2026 | Sale | Michael James Carlson (President / COO) sold 1,347 shares at $7.85 ($11K). Holdings down 5% to 25,861 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 2, 2026 |
| Jul 2, 2026 | Sale | Saul R. Laureles (Chief Legal Officer) sold 675 shares at $7.85 ($5K). Holdings down 2% to 34,525 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jul 2, 2026 |
| Mar 11, 2026 | Planned (10b5-1) | Matthew Tappin (President / COO) sold 402 shares at $10.83 ($4K), marked as a 10b5-1 plan trade. Holdings down 12% to 2,823 shares. | SEC filing Filed Mar 13, 2026 |
| Mar 10, 2026 | Sale | Arun Narayanan (CEO) sold 5,145 shares at $11.12 ($57K). Holdings down 28% to 12,980 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 10, 2026 | Sale | Matthew Tappin (President / COO) sold 655 shares at $11.12 ($7K). Holdings down 17% to 3,225 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 10, 2026 | Sale | Michael James Carlson (President / COO) sold 2,079 shares at $11.12 ($23K). Holdings down 10% to 19,458 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 10, 2026 | Sale | Saul R. Laureles (Chief Legal Officer) sold 942 shares at $11.12 ($10K). Holdings down 3% to 27,450 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 3–4, 2026 | Sale | Matthew Tappin (President / COO) sold 485 shares between Mar 3 and Mar 4 at about $9.80 ($5K). Holdings down 17% to 2,422 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 4, 2026 |
| Mar 3, 2026 | Sale | Saul R. Laureles (Chief Legal Officer) sold 292 shares at $9.67 ($3K). Holdings down 1% to 25,476 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 4, 2026 |
| Feb 20, 2026 | Sale | Matthew Tappin (President / COO) sold 366 shares at $11.40 ($4K). Holdings down 14% to 2,237 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 23, 2026 |
| Nov 11, 2025 | Sale | Matthew Tappin (President / COO) sold 9,584 shares at $17.70 ($170K). Holdings down 84% to 1,872 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 24, 2025 |
| Nov 18, 2025 | Sale | Rahul Shukla (Chief Accounting Officer) sold 3,674 shares at $16.21 ($60K). Holdings down 100% to 0 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 19, 2025 |
40 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
Follow STEM in the Insider Ledger app
Get the appA plain-English brief of insider purchases, 8-Ks and red flags at the companies you pick. No account needed.