Senior insider sale
Chief Product Officer at QUANTUM-SI INC — senior position signals high conviction
$46.4K
43.92K shares
What this filing means
VIECELI JOHN S. plans to sell 43.92K shares of QUANTUM-SI INC valued at approximately $46.4K. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.
Filed: 3/24/2026ACC: 0002032947-26-000001
Officer· Chief Product Officer
Since Mar 2026
43.92K
Shares to sell
$46.4K
Approx. market value
55.11K
Acquired (3 months)
1
Planned
1 completed
Securities Acquired — Last 3 Months2
Restricted Stock Unit Vesting
Equity compensation for services rendered
3/12/2025
44.27KRestricted Stock Unit Vesting
Equity compensation for services rendered
3/15/2024
10.84KTotal acquired55.11K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
3/12/2025 | Restricted Stock Unit Vesting Equity compensation for services rendered | 44.27K | — |
3/15/2024 | Restricted Stock Unit Vesting Equity compensation for services rendered | 10.84K | — |
| Total | 55.11K | ||
Planned & Completed Dispositions2
Completed
—Completed
Units to sell
21.93K
Market value
$28.0K
12/22/2025
Planned — Approximate Date
NASDAQPlanned
Units to sell
22K
Market value
$18.4K
3/20/2026
Total
Units
43.92K
Value
$46.4K
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| Completed | ||||
12/22/2025 | 21.93K | $28.0K | — | Completed |
| Planned — Approximate Date | ||||
3/20/2026 | 22K | $18.4K | NASDAQ | Planned |
| Total | 43.92K | $46.4K | ||