STEMCELLS INC (STEM) is a publicly traded company in the Unknown sector. Across all available filings, 38 corporate insiders have executed 636 transactions totaling $48.3M, demonstrating a bearish sentiment with -$44.3M in net insider flow. The most recent transaction on Feb 20, 2026 involved a sale of 366 shares valued at $4.2K.
No significant insider buying has been recorded for STEM in the recent period.
No significant insider selling has been recorded for STEM in the recent period.
Based on recent SEC filings, insider sentiment for STEM is bearish with an Insider Alignment Score of 4/100 and a net flow of -$44.3M. Insiders are reducing their positions, though this can be driven by factors unrelated to company outlook.
Insider trading at STEMCELLS INC (STEM) refers to stock transactions made by corporate insiders—executives, directors, and beneficial owners holding more than 10% of the company's shares. These individuals have access to material non-public information and are required by law to report their trades to the SEC within two business days. Currently, 38 insiders are actively trading STEM stock, having executed 636 transactions in the past 90 days. The most active insider is John Eugene Carrington (Executive), who has made 51 transactions totaling $19.7M.
Get notified when executives and directors at STEM file new Form 4 transactions
Date | Insider | Title | Type | Shares | Price | Value | Flags |
|---|---|---|---|---|---|---|---|
| Feb 20, 2026 | Tappin Matthew | President, Software Products | Sale | 366 | $11.40 | $4.2K | |
| Feb 19, 2026 | James Carlson Michael | President, Managed Services | Payment | 730 | $11.30 | $8.2K | |
| Feb 19, 2026 | R. Laureles Saul | Chief Legal Officer | Payment | 536 | $11.30 | $6.1K | |
| Feb 19, 2026 | Tappin Matthew | President, Software Products | Payment | 522 | $11.30 | $5.9K | |
| Nov 18, 2025 | Shukla Rahul | Executive | Sale | 3,674 | $16.21 | $59.6K | |
| Nov 11, 2025 | Tappin Matthew | Executive | Sale | 9,584 | $17.70 | $169.6K | |
| Nov 10, 2025 | R. Laureles Saul | Executive | Payment | 3,379 | $18.27 | $61.7K | |
| Nov 10, 2025 | Shukla Rahul | Executive | Payment | 2,076 | $18.27 | $37.9K | |
| Nov 10, 2025 | James Carlson Michael | Executive | Payment | 6,743 | $18.27 | $123.2K | |
| Nov 10, 2025 | Tappin Matthew | Executive | Payment | 5,416 | $18.27 | $99.0K | |
| Nov 7, 2025 | R. Laureles Saul | Executive | Option Exercise | 13,750 | $N/A | $0 | |
| Nov 7, 2025 | Shukla Rahul | Executive | Option Exercise | 5,750 | $N/A | $0 | |
| Nov 7, 2025 | James Carlson Michael | Executive | Option Exercise | 13,750 | $N/A | $0 | |
| Nov 7, 2025 | Tappin Matthew | Executive | Option Exercise | 15,000 | $N/A | $0 | |
| Jul 3, 2025 | S. Buzby David | Executive | Gift | 5,511 | $N/A | $0 |
| TYPE | COUNT | VALUE | % |
|---|---|---|---|
Sale(S) | 224 | $46.3M | 61.9% |
Payment(F) | 111 | $20.6M | 27.5% |
Exercise(M) | 117 | $5.8M | 7.8% |
Purchase(P) | 14 | $2.0M | 2.7% |
Award(A) | 135 | $71.4K | 0.1% |
Other(J) | 26 | $36.3K | 0.0% |
Gift(G) | 9 | $0 | 0.0% |
Insider selling pressure at STEMCELLS INC has increased, with 38 insiders executing 636 transactions across all time. Total sales of $46.3M significantly outpace purchases of $2.0M, resulting in a net outflow of $44.3M. This selling activity appears largely discretionary, which may warrant closer attention from investors.