Quantum-Si Inc. (QSI) on GreekSoup https://greeksoup.ai/stocks/us/qsi/ Every dated entry in the public record on Quantum-Si Inc.: results, filings, insider trades and the rest, from the filings, the last 90 days. en Sat, 31 Oct 2026 00:00:00 +0000 Quantum-Si Inc. filed 8-K: other eventshttps://greeksoup.ai/stocks/us/qsi/filings/us:QSI:filing:2026-10-15:078bb2cc40Thu, 15 Oct 2026 00:00:00 +0000SEC filingSEC filing. The filing. The page on GreekSoup.

]]> Quantum-Si Inc.: short interest 13,207,743 shares at the 15 October 2026 settlement, 1.00 days to coverhttps://greeksoup.ai/stocks/us/qsi/short-interest/us:QSI:short-interest:2026-10-15:d0c69bc111Thu, 15 Oct 2026 00:00:00 +0000Short interestShort interest. The filing. The page on GreekSoup.

]]> Quantum-Si Inc. filed 8-K: regulation fd disclosurehttps://greeksoup.ai/stocks/us/qsi/filings/us:QSI:filing:2026-10-08:2014298610Thu, 08 Oct 2026 00:00:00 +0000SEC filingSEC filing. The filing. The page on GreekSoup.

]]> Quantum-Si Inc.: short interest 11,830,534 shares at the 30 September 2026 settlement, 2.46 days to coverhttps://greeksoup.ai/stocks/us/qsi/short-interest/us:QSI:short-interest:2026-09-30:70b08be55dWed, 30 Sep 2026 00:00:00 +0000Short interestShort interest. The filing. The page on GreekSoup.

]]> Quantum-Si Inc. filed 8-K: regulation fd disclosurehttps://greeksoup.ai/stocks/us/qsi/filings/us:QSI:filing:2026-09-29:3eceacc180Tue, 29 Sep 2026 00:00:00 +0000SEC filingSEC filing. The filing. The page on GreekSoup.

]]> Quantum-Si Inc.: Form 144, Keyes Jeffry R. plans to sell 7,665 shares worth $5,806 around 21 September 2026https://greeksoup.ai/stocks/us/qsi/planned-sales/us:QSI:planned-sale:2026-09-23:6404f467dcWed, 23 Sep 2026 00:00:00 +0000Form 144Form 144. The filing. The page on GreekSoup.

]]> Quantum-Si Inc.: Form 144, LaPointe Christian plans to sell 14,516 shares worth $10,995 around 21 September 2026https://greeksoup.ai/stocks/us/qsi/planned-sales/us:QSI:planned-sale:2026-09-23:24bbeba70dWed, 23 Sep 2026 00:00:00 +0000Form 144Form 144. The filing. The page on GreekSoup.

]]> Quantum-Si Inc.: Form 144, Hawkins Jeffrey Alan plans to sell 29,852 shares worth $22,611 around 21 September 2026https://greeksoup.ai/stocks/us/qsi/planned-sales/us:QSI:planned-sale:2026-09-23:b43a0782e5Wed, 23 Sep 2026 00:00:00 +0000Form 144Form 144. The filing. The page on GreekSoup.

]]> Quantum-Si Inc.: Hawkins Jeffrey Alan (President & CEO) sold 9,709 shares at $0.76 on 22 September 2026, $7,387https://greeksoup.ai/stocks/us/qsi/insiders/us:QSI:insider:2026-09-23:b06dcb1507Wed, 23 Sep 2026 00:00:00 +0000Insider tradeInsider trade. The filing. The page on GreekSoup.

]]> Quantum-Si Inc.: Keyes Jeffry R. (Chief Financial Officer) sold 2,493 shares at $0.76 on 22 September 2026, $1,897https://greeksoup.ai/stocks/us/qsi/insiders/us:QSI:insider:2026-09-23:d8bdc19c1fWed, 23 Sep 2026 00:00:00 +0000Insider tradeInsider trade. The filing. The page on GreekSoup.

]]> Quantum-Si Inc.: Lapointe Christian (GC & Corp. Secretary) sold 4,721 shares at $0.76 on 22 September 2026, $3,592https://greeksoup.ai/stocks/us/qsi/insiders/us:QSI:insider:2026-09-23:7fe2f35dd3Wed, 23 Sep 2026 00:00:00 +0000Insider tradeInsider trade. The filing. The page on GreekSoup.

]]> Quantum-Si Inc.: Hawkins Jeffrey Alan (President & CEO) sold 20,143 shares at $0.76 on 21 September 2026, $15,224https://greeksoup.ai/stocks/us/qsi/insiders/us:QSI:insider:2026-09-23:0fcbd8ececWed, 23 Sep 2026 00:00:00 +0000Insider tradeInsider trade. The filing. The page on GreekSoup.

]]> Quantum-Si Inc.: Keyes Jeffry R. (Chief Financial Officer) sold 5,172 shares at $0.76 on 21 September 2026, $3,909https://greeksoup.ai/stocks/us/qsi/insiders/us:QSI:insider:2026-09-23:95b6f92f74Wed, 23 Sep 2026 00:00:00 +0000Insider tradeInsider trade. The filing. The page on GreekSoup.

]]> Quantum-Si Inc.: Lapointe Christian (GC & Corp. Secretary) sold 9,795 shares at $0.76 on 21 September 2026, $7,403https://greeksoup.ai/stocks/us/qsi/insiders/us:QSI:insider:2026-09-23:2525ff16e2Wed, 23 Sep 2026 00:00:00 +0000Insider tradeInsider trade. The filing. The page on GreekSoup.

]]> Quantum-Si Inc.: short interest 13,046,142 shares at the 15 September 2026 settlement, 10.32 days to coverhttps://greeksoup.ai/stocks/us/qsi/short-interest/us:QSI:short-interest:2026-09-15:22944aafe7Tue, 15 Sep 2026 00:00:00 +0000Short interestShort interest. The filing. The page on GreekSoup.

]]> Quantum-Si Inc.: short interest 14,444,969 shares at the 31 August 2026 settlement, 4.78 days to coverhttps://greeksoup.ai/stocks/us/qsi/short-interest/us:QSI:short-interest:2026-08-31:872a729b71Mon, 31 Aug 2026 00:00:00 +0000Short interestShort interest. The filing. The page on GreekSoup.

]]> Quantum-Si Inc.: Schedule 13D/A filed by ROTHBERG JONATHAN M, 100.0% of the classhttps://greeksoup.ai/stocks/us/qsi/holders/us:QSI:schedule-13:2026-08-28:60b0c24601Fri, 28 Aug 2026 00:00:00 +0000Schedule 13D/13GIn connection with estate planning, entities owned by trusts created for the benefit of Dr. Jonathan Rothberg's children have entered into a trading plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended (the "Plan"), a copy of which is attached hereto as Exhibit 6. Pursuant to the Plan, sales of up to 8,947,746 shares of Class A common stock may be effected during the plan sales period beginning following the cooling-off period contained in Rule 10b5-1(c) on January 15, 2027 and ending on January 15, 2028 in accordance with the terms and conditions of the Plan. The

Schedule 13D/13G. The filing. The page on GreekSoup.

]]> Quantum-Si Inc.: short interest 14,273,563 shares at the 14 August 2026 settlement, 4.68 days to coverhttps://greeksoup.ai/stocks/us/qsi/short-interest/us:QSI:short-interest:2026-08-14:50db9af3faFri, 14 Aug 2026 00:00:00 +0000Short interestShort interest. The filing. The page on GreekSoup.

]]> Quantum-Si Inc. Q2 FY2026 results: revenue $344,000, net income -$24 millionhttps://greeksoup.ai/stocks/us/qsi/results/fy2026-q2/us:QSI:result:2026-08-13:f788b89de2Thu, 13 Aug 2026 00:00:00 +0000ResultsResults. The filing. The page on GreekSoup.

]]> Quantum-Si Inc. filed 10-Q: 10-qhttps://greeksoup.ai/stocks/us/qsi/filings/us:QSI:filing:2026-08-13:36d02ae873Thu, 13 Aug 2026 00:00:00 +0000SEC filingSEC filing. The filing. The page on GreekSoup.

]]> Quantum-Si Inc. filed 8-K: results of operationshttps://greeksoup.ai/stocks/us/qsi/filings/us:QSI:filing:2026-08-13:8652395dacThu, 13 Aug 2026 00:00:00 +0000SEC filingSEC filing. The filing. The page on GreekSoup.

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