SENS · Insider trading · 13F holders · Congress trades
Senseonics Holdings, Inc. (SENS)
Who is buying and selling SENS: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 5
- Insider buys, 90 days
- $125K
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
SENS at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 1 SENS insider filed 1 open-market purchase worth $125K on SEC Form 4.
- 5 13F filers hold SENS among their 50 largest positions, worth $47.3M combined. The biggest bets by portfolio weight are Sio Capital Management, LLC (1.6%), Avidity Partners Management LP (1.5%) and Masters Capital Management LLC (0.6%). In their latest 13Fs, 1 manager opened a new position and 2 added to one.
- No member of Congress has disclosed a trade in SENS.
- SENS last closed at $9.75 on Oct 29, 2026.
SENS insider trading
Between Aug 1, 2026 and Oct 29, 2026, 1 SENS insider filed 1 open-market purchase worth $125K on SEC Form 4.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Aug 20, 2026 | Roeder Douglas A | Director | Buy | 13,953.284 | $8.98 | $125K | SEC |
Who owns SENS? Hedge funds and superinvestors
5 13F filers hold SENS among their 50 largest positions, worth $47.3M combined. The biggest bets by portfolio weight are Sio Capital Management, LLC (1.6%), Avidity Partners Management LP (1.5%) and Masters Capital Management LLC (0.6%). In their latest 13Fs, 1 manager opened a new position and 2 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Sessa Capital IM, L.P.Hedge fund | 0.4% | $25.2M | 4,437,532 | +151.3% shares | Q2 2026 |
| Avidity Partners Management LPHedge fund | 1.5% | $9.1M | 1,600,000 | New | Q2 2026 |
| Sio Capital Management, LLCHedge fund | 1.6% | $9.0M | 1,592,692 | — | Q2 2026 |
| Masters Capital Management LLCHedge fund | 0.6% | $4.0M | 700,000 | +40.0% shares | Q2 2026 |
| Pfizer IncCorporation | 0.0% | $12K | 2,171 | +0.0% shares | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 5). Screen SENS in the grand portfolio →
SENS stock trades by members of Congress
No member of Congress has disclosed a trade in SENS.
SENS questions and answers
Are insiders buying SENS stock?
Between Aug 1, 2026 and Oct 29, 2026, 1 SENS insider filed 1 open-market purchase worth $125K on SEC Form 4.
Which hedge funds own SENS?
5 13F filers hold SENS among their 50 largest positions, worth $47.3M combined. The biggest bets by portfolio weight are Sio Capital Management, LLC (1.6%), Avidity Partners Management LP (1.5%) and Masters Capital Management LLC (0.6%). In their latest 13Fs, 1 manager opened a new position and 2 added to one.
Has Congress traded SENS?
No member of Congress has disclosed a trade in SENS.
Who is the largest holder of SENS?
Among 13F filers, Sessa Capital IM, L.P. reports the largest SENS position, $25.2M (4,437,532 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Sio Capital Management, LLC's: 1.6% of its portfolio.
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