Sensei Biotherapeutics, Inc. Insider Trading Activity
Every SEC Form 4 insider transaction reported for Sensei Biotherapeutics, Inc. (SNSE), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are SNSE insiders buying or selling?
In the last 12 months, Sensei Biotherapeutics, Inc. insiders reported 2 open-market purchases ($1.0M) and 7 sales ($2.0M) — net selling of $938.3K. Since February 2021, Trabud has recorded 109 Form 4 filings for SNSE: 99 buys ($9.6M) and 10 sells ($8.1M).
Source: SEC EDGAR Form 4
What stands out
- The largest open-market purchase in the last 12 months was $728.9K by Israel A Englander (10% Owner) on May 15, 2026. SEC ↗
- The most recent open-market purchase was reported on May 15, 2026 (5 months ago).
Key Statistics (February 2021 – Jun 1, 2026)
Total Form 4 filings
109
SEC EDGAR
Insider filers
7
Insider buys (99)
$9.6M
Insider sells (10)
$8.1M
Insider sentiment
Net buyingNet insider flow of $1.5M in net buying since February 2021, and $938.3K in net selling over the last 12 months.
Recent SNSE insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Jun 1, 2026 | Cambrian BioPharma Inc | 10% Owner | Sale | 25.0K | $20.02 | $500.5K | SEC ↗ |
| Jun 1, 2026 | James Peyer | Other, 10% Owner | Sale | 25.0K | $20.02 | $500.5K | SEC ↗ |
| May 15, 2026 | Israel A Englander | 10% Owner | Sale | 12.9K | $30.85 | $396.8K | SEC ↗ |
| May 15, 2026 | Israel A Englander | 10% Owner | Purchase | 9.4K | $32.33 | $305.2K | SEC ↗ |
| May 15, 2026 | Israel A Englander | 10% Owner | Purchase | 27.3K | $26.66 | $728.9K | SEC ↗ |
| Dec 10, 2025 | Cambrian BioPharma Inc | 10% Owner | Sale | 6.6K | $8.25 | $54.6K | SEC ↗ |
| Dec 10, 2025 | James Peyer | Other, 10% Owner | Sale | 6.6K | $8.25 | $54.6K | SEC ↗ |
| Dec 8, 2025 | Cambrian BioPharma Inc | 10% Owner | Sale | 21.3K | $10.93 | $232.7K | SEC ↗ |
| Dec 8, 2025 | James Peyer | Other, 10% Owner | Sale | 21.3K | $10.93 | $232.7K | SEC ↗ |
| Sep 13, 2023 | John Celebi | President and CEO | Purchase | 500 | $0.85 | $425 | SEC ↗ |
| Jun 2, 2023 | Christian Angermayer | 10% Owner | Sale | 3.4M | $1.58 | $5.4M | SEC ↗ |
| Feb 28, 2023 | Christian Angermayer | 10% Owner | Purchase | 2.2K | $1.61 | $3.5K | SEC ↗ |
| Jun 10, 2022 | James Peyer | Director, 10% Owner | Purchase | 1.2K | $3.20 | $3.8K | SEC ↗ |
| Jun 10, 2022 | Cambrian BioPharma Inc | 10% Owner | Purchase | 1.2K | $3.20 | $3.8K | SEC ↗ |
| Apr 21, 2022 | James Peyer | Director, 10% Owner | Purchase | 9.5K | $14.34 | $136.2K | SEC ↗ |
| Apr 21, 2022 | James Peyer | Director, 10% Owner | Purchase | 752 | $19.75 | $14.9K | SEC ↗ |
| Apr 21, 2022 | Cambrian BioPharma Inc | 10% Owner | Purchase | 9.5K | $14.34 | $136.2K | SEC ↗ |
| Apr 21, 2022 | Cambrian BioPharma Inc | 10% Owner | Purchase | 752 | $19.75 | $14.9K | SEC ↗ |
| Mar 2, 2022 | Cambrian BioPharma Inc | 10% Owner | Purchase | 1.2K | $3.20 | $3.8K | SEC ↗ |
| Mar 2, 2022 | James Peyer | Director, 10% Owner | Purchase | 1.2K | $3.20 | $3.8K | SEC ↗ |
| Mar 1, 2022 | James Peyer | Director, 10% Owner | Purchase | 2.5K | $3.60 | $9.0K | SEC ↗ |
| Mar 1, 2022 | Cambrian BioPharma Inc | 10% Owner | Purchase | 2.5K | $3.60 | $9.0K | SEC ↗ |
| Feb 28, 2022 | James Peyer | Director, 10% Owner | Purchase | 2.5K | $3.65 | $9.1K | SEC ↗ |
| Feb 28, 2022 | Cambrian BioPharma Inc | 10% Owner | Purchase | 2.5K | $3.65 | $9.1K | SEC ↗ |
| Feb 25, 2022 | Cambrian BioPharma Inc | 10% Owner | Purchase | 17.5K | $3.65 | $64.0K | SEC ↗ |
Showing the 25 most recent of 109 Form 4 filings for Sensei Biotherapeutics, Inc..
Most active SNSE insiders
- Cambrian BioPharma Inc50 filings
- James Peyer50 filings
- Israel A Englander3 filings
- Christian Angermayer2 filings
- Robert Hamilton Pierce2 filings
Ask anything about SNSE insider activity
Use Trabud's AI agent to query Sensei Biotherapeutics, Inc.'s Form 4 history in plain English — "Show me SNSE CEO purchases this year" or compare it against any other ticker.
Open the AI agentSNSE insider trading FAQ
Are Sensei Biotherapeutics, Inc. insiders buying or selling?
In the last 12 months, Sensei Biotherapeutics, Inc. insiders reported 2 open-market purchases ($1.0M) and 7 sales ($2.0M) — net selling of $938.3K. Since February 2021, Trabud has recorded 109 Form 4 filings for SNSE: 99 buys ($9.6M) and 10 sells ($8.1M). Over the full record that is net buying of $1.5M.
How many insiders trade SNSE stock?
7 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for Sensei Biotherapeutics, Inc.. The most recent filing was accepted on Jun 1, 2026.
Where does Trabud get SNSE insider trading data?
All SNSE insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.