QSI Quantum-Si Incorporated

NASDAQ
$0.73

Quantum-Si Incorporated (QSI) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y
Insider signal In line Selling ran in line with QSI's own trailing one-year pace, with 12% of sale value under a prearranged plan.
Cluster activity 0 buyers in the last 30 days 0 buyers in the last 90 days 4 sellers in the last 90 days
Insiders buying
2
2 transactions
Insiders selling
6
35 transactions
Purchases
$564.3K
609,890 shares
Sales
$693.6K
573,957 shares
Net activity
-$129.4K
purchases less sales

How much of that selling was preplanned? 12% planned / 88% discretionary

10b5-1 plan sales $80.1K 1 transaction · 26,095 shares
Discretionary sales $613.5K 34 transactions · 547,862 shares

Largest single sale: $84.2K.

Where they traded

Buy Sell Dot area is proportional to transaction value.

Last open-market purchase: March 5, 2026 , by Kummeth Charles R. .

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
Vieceli John S. Chief Product Officer Sell 15,112 $0.90 $13.6K 1,140,434 −1.3% of holding
Hawkins Jeffrey Alan President & CEO Sell 11,311 $0.90 $10.2K 3,669,802 −0.3% of holding
LaPointe Christian GC & Corp. Secretary Sell 7,794 $0.90 $7.0K 1,182,429 −0.7% of holding
Keyes Jeffry R. Chief Financial Officer Sell 4,117 $0.90 $3.7K 1,724,349 −0.2% of holding
Vieceli John S. Chief Product Officer Sell 15,111 $0.96 $14.5K 1,155,546 −1.3% of holding
Hawkins Jeffrey Alan President & CEO Sell 11,310 $0.96 $10.8K 3,681,113 −0.3% of holding
LaPointe Christian GC & Corp. Secretary Sell 7,794 $0.96 $7.5K 1,190,223 −0.7% of holding
Keyes Jeffry R. Chief Financial Officer Sell 4,116 $0.96 $3.9K 1,728,466 −0.2% of holding
Hawkins Jeffrey Alan President & CEO Sell 83,712 $0.99 $83.3K 3,692,423 −2.2% of holding
Keyes Jeffry R. Chief Financial Officer Sell 37,381 $0.99 $37.2K 1,732,582 −2.1% of holding
Hawkins Jeffrey Alan President & CEO Sell 83,712 $1.01 $84.2K 3,776,135 −2.2% of holding
Keyes Jeffry R. Chief Financial Officer Sell 37,382 $1.01 $37.6K 1,769,963 −2.1% of holding
Hawkins Jeffrey Alan President & CEO Sell 12,149 $0.83 $10.0K 3,859,847 −0.3% of holding
Vieceli John S. Chief Product Officer Sell 11,239 $0.83 $9.3K 1,170,657 −1% of holding
LaPointe Christian GC & Corp. Secretary Sell 6,110 $0.83 $5.1K 1,198,017 −0.5% of holding
Keyes Jeffry R. Chief Financial Officer Sell 4,422 $0.83 $3.7K 1,807,345 −0.2% of holding
Hawkins Jeffrey Alan President & CEO Sell 11,628 $0.85 $9.9K 3,871,996 −0.3% of holding
Vieceli John S. Chief Product Officer Sell 10,758 $0.85 $9.1K 1,181,896 −0.9% of holding
LaPointe Christian GC & Corp. Secretary Sell 5,849 $0.85 $5.0K 1,204,127 −0.5% of holding
Keyes Jeffry R. Chief Financial Officer Sell 4,233 $0.85 $3.6K 1,811,767 −0.2% of holding
Kummeth Charles R. Director Buy 500,000 $0.92 $459.8K 855,000
Dowdy Paula Director Buy 109,890 $0.95 $104.5K 269,107
Hawkins Jeffrey Alan President & CEO Sell 23,707 $1.28 $30.3K 2,578,018 −0.9% of holding
Vieceli John S. Chief Product Officer Sell 21,927 $1.28 $28.0K 800,973 −2.7% of holding
LaPointe Christian GC & Corp. Secretary Sell 11,951 $1.28 $15.2K 948,855 −1.2% of holding
Keyes Jeffry R. Chief Financial Officer Sell 8,627 $1.28 $11.0K 1,163,197 −0.7% of holding
ROTHBERG JONATHAN M Director Sell 10b5-1 26,095 $3.07 $80.1K 1,904,866 −1.4% of holding
Bennett Todd C. Chief Commercial Officer Sell 18,482 $1.64 $30.2K 681,521 −2.6% of holding
Hawkins Jeffrey Alan President & CEO Sell 10,643 $1.64 $17.4K 2,601,725 −0.4% of holding
Vieceli John S. Chief Product Officer Sell 9,843 $1.64 $16.1K 822,900 −1.2% of holding
LaPointe Christian GC & Corp. Secretary Sell 5,364 $1.64 $8.8K 960,806 −0.6% of holding
Keyes Jeffry R. Chief Financial Officer Sell 3,873 $1.64 $6.3K 1,171,824 −0.3% of holding
Bennett Todd C. Chief Commercial Officer Sell 18,482 $1.68 $31.1K 700,003 −2.6% of holding
Hawkins Jeffrey Alan President & CEO Sell 10,643 $1.68 $17.9K 2,612,368 −0.4% of holding
Vieceli John S. Chief Product Officer Sell 9,843 $1.68 $16.6K 832,743 −1.2% of holding
LaPointe Christian GC & Corp. Secretary Sell 5,364 $1.68 $9.0K 966,170 −0.6% of holding
Keyes Jeffry R. Chief Financial Officer Sell 3,873 $1.68 $6.5K 1,175,697 −0.3% of holding

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.