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John S. Vieceli

Executive
Insider activity · 24 months0 buys6 salesCumulative net flow
Total declarations
12
Company
1
▲ Purchases (0 ops.)
—
▼ Sales (10 ops.)
€112k

Latest filing published 24 Mar 2026 for Quantum-Si Inc, €7,883.

Filing timeline

BuySale
John S. Vieceli

Insider track record

Disclosed buys
0
Disclosed sells
10
Signal history

John S. Vieceli: trading record in brief

John S. Vieceli discloses dealings in Quantum-Si Inc to SEC (Form 4). We count 12 filings; the first trade dates from 23 September 2024 and the latest from 23 March 2026.

On the market, this insider has only sold: 10 sales, €112k in total. Besides market trades, the filings include 2 share grants. In 2026 alone, the filings show no purchases and 2 sales.

The newest entry dates from 24 March 2026: an open-market sale of €8,036, in Quantum-Si Inc. The median gap between a trade and its publication by SEC (Form 4) is 2 days. US insiders must file a Form 4 within two business days of a trade. Sales are harder to read than purchases, since they often meet personal needs such as tax or diversification. Source: insider filings from SEC (Form 4). Past trades are no guide to future returns.

Companies and markets linked to John S. Vieceli

Open company profiles for insider transactions, fundamentals and analyst consensus when available.

Declarations9 total
  • ▼
    Chief Product OfficerExecutivesQuantum-Si Inc
    9,126 USD30SEC
    10,758 shares@ US$0.84836.9% of flowClass A Common StockSEC:0001140361-26-010945:0
  • ◆
    Chief Product OfficerExecutivesQuantum-Si Inc
    0SEC
    391,681 shares0Class A Common StockSEC:0001140361-26-009605:0
  • ▼
    Chief Product OfficerExecutivesQuantum-Si Inc
    27,979 USD31SEC
    21,927 shares@ US$1.27621.0% of flowClass A Common StockSEC:0002032947-25-000005:0
  • ▼
    Chief Product OfficerExecutivesQuantum-Si Inc
    16,562 USD30SEC
    9,843 shares@ US$1.682612.4% of flowClass A Common StockSEC:0001140361-25-036047:0
  • ▼
    Chief Product OfficerExecutivesQuantum-Si Inc
    35,382 USD32SEC
    21,923 shares@ US$1.613926.9% of flowClass A Common StockSEC:0001140361-25-023514:0
  • ▼
    Chief Product OfficerExecutivesQuantum-Si Inc
    5,981 USD29SEC
    4,317 shares@ US$1.38554.9% of flowClass A Common StockSEC:0001140361-25-010074:0
  • ◆
    Chief Product OfficerExecutivesQuantum-Si Inc
    0SEC
    708,333 shares0Class A Common StockSEC:0001140361-25-008849:0
  • ▼
    Chief Product OfficerExecutivesQuantum-Si Inc
    5,570 USD11SEC
    4,306 shares@ US$1.29364.7% of flowClass A Common StockSEC:0001140361-24-050424:0
  • ▼
    Chief Product OfficerExecutivesQuantum-Si Inc
    2,073 USD11SEC
    2,192 shares@ US$0.94591.6% of flowClass A Common StockSEC:0001140361-24-041897:0

9 of 9 declarations