Quantum-Si incorporated (QSI) Insider Trading
Over the last 3 months, QSI insiders made 2 open-market buys and 11 sales, a net purchase of $350K (SEC Form 4). Multiple insiders bought within days of each other (cluster buying). Over the last 6 months, 88 institutions increased and 77 reduced their position (13F).
Insider Activity
Sentiment
68/100
Buys (3m)
2
Sells (3m)
11
Net (3m)
$349.6K
Insiders buyingCluster buying
Insider trades by month Buys Sells
Jun
Sep
Oct
Dec
Mar
Apr
Context3-month price +30.8%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 20, 2026 | Kummeth Charles R.director | Grant | 251,185 | $0.85 |
| May 20, 2026 | Makes Brigiddirector | Grant | 251,185 | $0.85 |
| May 20, 2026 | Fattori Ruth Adirector | Grant | 251,185 | $0.85 |
| May 20, 2026 | Dowdy Pauladirector | Grant | 251,185 | $0.85 |
| May 20, 2026 | Jafri Amirdirector | Grant | 251,185 | $0.85 |
| May 20, 2026 | Kenny John P.director | Grant | 251,185 | $0.85 |
| May 20, 2026 | RAKIN KEVINdirector | Grant | 251,185 | $0.85 |
| May 20, 2026 | Mendel Scottdirector | Grant | 251,185 | $0.85 |
| May 20, 2026 | ROTHBERG JONATHAN Mdirector, 10 percent owner: | Grant | 251,185 | $0.85 |
| Apr 22, 2026 | Keyes Jeffry R.officer: Chief Financial Officer | Sell | 37,382 | $1.01 |
| Apr 22, 2026 | Keyes Jeffry R.officer: Chief Financial Officer | Sell | 37,381 | $0.99 |
| Apr 22, 2026 | Hawkins Jeffrey Alandirector, officer: President & CEO | Sell | 83,712 | $1.01 |
| Mar 24, 2026 | Keyes Jeffry R.officer: Chief Financial Officer | Sell | 4,233 | $0.85 |
| Mar 24, 2026 | Keyes Jeffry R.officer: Chief Financial Officer | Sell | 4,422 | $0.83 |
| Mar 24, 2026 | LaPointe Christianofficer: GC & Corp. Secretary | Sell | 5,849 | $0.85 |
| Mar 24, 2026 | LaPointe Christianofficer: GC & Corp. Secretary | Sell | 6,110 | $0.83 |
| Mar 24, 2026 | Vieceli John S.officer: Chief Product Officer | Sell | 10,758 | $0.85 |
| Mar 24, 2026 | Vieceli John S.officer: Chief Product Officer | Sell | 11,239 | $0.83 |
| Mar 24, 2026 | Hawkins Jeffrey Alandirector, officer: President & CEO | Sell | 11,628 | $0.85 |
| Mar 24, 2026 | Hawkins Jeffrey Alandirector, officer: President & CEO | Sell | 12,149 | $0.83 |
| Mar 16, 2026 | Keyes Jeffry R.officer: Chief Financial Officer | Grant | 780,847 | $0.98 |
| Mar 16, 2026 | LaPointe Christianofficer: GC & Corp. Secretary | Grant | 312,339 | $0.98 |
| Mar 16, 2026 | LaPointe Christianofficer: GC & Corp. Secretary | Grant | 261,121 | — |
| Mar 16, 2026 | Hawkins Jeffrey Alandirector, officer: President & CEO | Grant | 1,561,695 | $0.98 |
| Mar 16, 2026 | Hawkins Jeffrey Alandirector, officer: President & CEO | Grant | 1,305,606 | — |
| Mar 16, 2026 | Vieceli John S.officer: Chief Product Officer | Grant | 468,508 | $0.98 |
| Mar 16, 2026 | Vieceli John S.officer: Chief Product Officer | Grant | 391,681 | — |
| Mar 16, 2026 | Keyes Jeffry R.officer: Chief Financial Officer | Grant | 652,803 | — |
| Mar 9, 2026 | Kummeth Charles R.director | Buy | 500,000 | $0.92 |
| Mar 9, 2026 | Dowdy Pauladirector | Buy | 109,890 | $0.95 |
Source: QSI SEC Form 4 filings, latest May 20, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their QSI positions over the last 6 months (SEC Form 13F).
Increased
88
New positions
66
Reduced
77
Sold out
41
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Increased | 13.4M | May 13, 2026 |
| BLACKROCK, INC. | Increased | 13.1M | Feb 12, 2026 |
| VANGUARD GROUP INC | Increased | 9.6M | Jan 29, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 7.0M | May 15, 2026 |
| ARK INVESTMENT MANAGEMENT LLC | Reduced | 7.0M | Feb 11, 2026 |
| ARK INVESTMENT MANAGEMENT LLC | Reduced | 6.9M | May 12, 2026 |
| NIKKO ASSET MANAGEMENT AMERICAS, INC. | Reduced | 4.7M | Feb 11, 2026 |
| SUMITOMO MITSUI TRUST HOLDINGS, INC. | Reduced | 4.7M | Jan 23, 2026 |
| NIKKO ASSET MANAGEMENT AMERICAS, INC. | Reduced | 4.4M | May 7, 2026 |
| SUMITOMO MITSUI TRUST HOLDINGS, INC. | Reduced | 4.4M | Apr 30, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 4.1M | Feb 9, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 3.8M | May 15, 2026 |
| STATE STREET CORP | Increased | 3.8M | May 15, 2026 |
| STATE STREET CORP | Increased | 3.6M | Feb 13, 2026 |
| CITADEL ADVISORS LLC | Increased | 2.7M | Feb 17, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.