QUANTUM-SI INC (QSI) Stock Ownership

NASDAQ:QSI • US74765K1051

Current stock price

0.7378 USD
-0.03 (-3.44%)
At close:
0.7351 USD
0 (-0.37%)
After Hours:

QSI Ownership information

QSI Ownership Chart.QSI Ownership Chart: showing Insider, Institutional ownership and shares available to the public.QSI Ownership.InsiderInstitutionalPublic



Shares Outstanding216.37M
Float172.33M
Float Short Interest Percentage12.28%
Owners (insider)4.61%
Owners (institutional)32.67%
Owners (insider) change6.53%
Owners (institutional) change1.39%
QSI Institutional Ownership HistoryQSI Institutional Ownership HistoryQSI Institutional Ownership History Dec 2021 Jun 2022 Dec 2022 Jun 2023 Dec 2023 Jun 2024 Dec 2024 Jun 2025 Dec 2025 20M 40M 60M
QSI Historical Insider Transactions ChartQSI Historical Insider Buy and Sell Transactions ChartQSI Historical Insider Transactions Apr 2025 May 2025 Jun 2025 Jul 2025 Aug 2025 Sep 2025 Oct 2025 Nov 2025 Dec 2025 Jan 2026 Feb 2026 Mar 2026 0 1M 2M 3M
DateNameTypeSharesPriceAmount
Mar 20, 2026Vieceli John S.Open Market Sale219970.84$ 18,416.17
Mar 20, 2026Hawkins Jeffrey AlanOpen Market Sale237770.84$ 19,906.40
Mar 20, 2026Keyes Jeffry R.Open Market Sale86550.84$ 7,246.08
Mar 20, 2026LaPointe ChristianOpen Market Sale119590.84$ 10,012.23
Mar 12, 2026Keyes Jeffry R.Grant6528030.00$ 0.00
Mar 12, 2026Vieceli John S.Grant3916810.00$ 0.00
Mar 12, 2026Hawkins Jeffrey AlanGrant13056060.00$ 0.00
Mar 12, 2026LaPointe ChristianGrant2611210.00$ 0.00
Mar 5, 2026Kummeth Charles R.Open Market Purchase5000000.92$ 459,800.00
Mar 5, 2026Dowdy PaulaOpen Market Purchase1098900.95$ 104,450.45
Dec 22, 2025Hawkins Jeffrey AlanOpen Market Sale237071.28$ 30,250.13
Dec 22, 2025Keyes Jeffry R.Open Market Sale86271.28$ 11,008.05
Dec 22, 2025Vieceli John S.Open Market Sale219271.28$ 27,978.85
Dec 22, 2025LaPointe ChristianOpen Market Sale119511.28$ 15,249.48
Oct 16, 2025ROTHBERG JONATHAN MOpen Market Sale260953.07$ 80,111.65
Sep 22, 2025LaPointe ChristianOpen Market Sale107281.66$ 17,795.61
Sep 22, 2025Hawkins Jeffrey AlanOpen Market Sale212861.66$ 35,309.22
Sep 22, 2025Vieceli John S.Open Market Sale196861.66$ 32,655.14
Sep 22, 2025Keyes Jeffry R.Open Market Sale77461.66$ 12,849.06
Sep 22, 2025Bennett Todd C.Open Market Sale369641.66$ 61,315.88
Jun 23, 2025Hawkins Jeffrey AlanOpen Market Sale237051.61$ 38,257.50
Jun 23, 2025LaPointe ChristianOpen Market Sale119461.61$ 19,279.65
Jun 23, 2025Keyes Jeffry R.Open Market Sale86241.61$ 13,918.27
Jun 23, 2025Vieceli John S.Open Market Sale219231.61$ 35,381.53