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OSSONE STOP SYSTEMS, INC.

Market cap
$147.40M
as of 2026-10-23
Latest close
$5.91
as of 2026-10-23
Sector
Technology
as of 2026-10-24
Industry
Computer Hardware
as of 2026-10-24

Cluster

No cluster in the last 90 days under the default rule (14d · ≥2 insiders · all roles).

Form 4 historysince 2023-11-20

Dashed line = amended filing (Form 4/A)

InsiderTradedFiledTypeSharesPriceValueOwned after10b5-1 planFiling
Knowles MichaelChief Executive OfficerAug 15Sep 4F8,621$13.61$117,332590,141NoForm 4
Gabel Daniel G.Chief Financial OfficerAug 7Sep 4F3,832$13.32$51,042150,064NoForm 4
Knowles MichaelChief Executive OfficerAug 7Sep 4F8,621$13.32$114,832598,762NoForm 4
Knowles MichaelChief Executive OfficerJun 5Jun 12F19,675$16.89$332,311607,383NoForm 4
Gabel Daniel G.Chief Financial OfficerMay 11May 28F1,613$15.68$25,292153,896NoForm 4
Herbets Mitchell HMay 26May 26S5,000$17.62Sale −$88,10048,984NoForm 4
Matz Gregory WMay 26May 26S8,000$17.52Sale −$140,16078,914NoForm 4
Bassett David GeorgeMay 26May 26S8,000$17.64Sale −$141,12024,984NoForm 4
Herbets Mitchell HMay 20May 26A11,984$0.00$053,984NoForm 4
Dumont Michael J.May 20May 26A11,984$0.00$0119,833NoForm 4
Matz Gregory WMay 20May 26A11,984$0.00$086,914NoForm 4
Bassett David GeorgeMay 20May 26A11,984$0.00$032,984NoForm 4
Bassett David GeorgeMay 21, 2025May 26A21,000$0.00$021,000NoForm 4
Knowles MichaelChief Executive OfficerMay 21, 2025Mar 274/AA0$0.00$0591,653NoForm 4/A
Ison JamesCPOFeb 15Mar 2F3,120$8.70$27,144146,170NoForm 4
Ison JamesCPOFeb 15Mar 2G4,263$0.00$0141,907NoForm 4
Ison JamesCPOFeb 15Mar 2G4,263$0.00$0231,148NoForm 4
Knowles MichaelChief Executive OfficerFeb 15Mar 2F6,650$8.70$57,855648,058NoForm 4
Ison JamesCPOFeb 7Mar 2A34,313$0.00$0155,836NoForm 4
Ison JamesCPOFeb 7Mar 2F6,546$9.24$60,485149,290NoForm 4
Ison JamesCPOFeb 7Mar 2G8,213$0.00$0141,077NoForm 4
Ison JamesCPOFeb 7Mar 2G8,213$0.00$0226,885NoForm 4
Knowles MichaelChief Executive OfficerFeb 7Mar 2F13,298$9.24$122,874654,708NoForm 4
Gabel Daniel G.Chief Financial OfficerFeb 7Mar 2F7,799$9.24$72,063155,509NoForm 4
Knowles MichaelChief Executive OfficerFeb 7Feb 11A101,862$0.00$0668,006NoForm 4
Gabel Daniel G.Chief Financial OfficerFeb 7Feb 11A55,239$0.00$0163,308NoForm 4
Gabel Daniel G.Chief Financial OfficerDec 31, 2025Jan 12F3,215$7.18$23,084108,069NoForm 4
Knowles MichaelChief Executive OfficerDec 31, 2025Jan 7F19,075$7.18$136,959566,144NoForm 4
Knowles MichaelChief Executive OfficerAug 20, 2025Sep 2, 2025F8,359$5.26$43,968585,219NoForm 4
Knowles MichaelChief Executive OfficerJun 5, 2025Sep 2, 2025F19,075$3.06$58,370593,578NoForm 4
Knowles MichaelChief Executive OfficerMay 21, 2025Sep 2, 2025A21,000$0.00$0612,653NoForm 4
Knowles MichaelChief Executive OfficerFeb 20, 2025Sep 2, 2025F16,800$3.76$63,168591,653NoForm 4
Knowles MichaelChief Executive OfficerFeb 7, 2025Sep 2, 2025A131,448$4.06$533,679608,453NoForm 4
Ison JamesCPOAug 20, 2025Aug 25, 2025F3,113$5.26$16,374125,794NoForm 4
Ison JamesCPOAug 20, 2025Aug 25, 2025G4,271$0.00$0121,523NoForm 4
Ison JamesCPOAug 20, 2025Aug 25, 2025G4,271$0.00$0218,672NoForm 4
Herbets Mitchell HMay 21, 2025May 28, 2025A21,000$0.00$042,000NoForm 4
Dumont Michael J.May 21, 2025May 27, 2025F21,000$0.00$021,000NoForm 4
Matz Gregory WMay 21, 2025May 23, 2025A21,000$0.00$074,930NoForm 4
Ison JamesCPOFeb 20, 2025Mar 13, 2025F7,006$3.76$26,343136,667NoForm 4
Ison JamesCPOFeb 20, 2025Mar 13, 2025G7,760$0.00$0128,907NoForm 4
Ison JamesCPOFeb 20, 2025Mar 13, 2025G7,760$0.00$0214,401NoForm 4
Gabel Daniel G.Chief Financial OfficerFeb 7, 2025Mar 5, 2025A71,284$4.06$289,413111,284NoForm 4
Ison JamesCPOFeb 7, 2025Feb 24, 2025A44,279$4.06$179,773135,913NoForm 4
Knowles MichaelChief Executive OfficerDec 5, 2020Dec 30, 2024F17,525$2.41$42,235477,530NoForm 4
Gabel Daniel G.Chief Financial OfficerNov 11, 2024Nov 12, 2024A40,000$0.00$040,000NoForm 4
Morrison John W Jr.Chief Financial OfficerSep 23, 2024Sep 25, 2024F5,961$2.19$13,055305,381NoForm 4
Ison JamesCPOSep 23, 2024Sep 25, 2024F4,440$2.19$9,72499,861NoForm 4
Ison JamesCPOSep 23, 2024Sep 25, 2024G8,227$0.00$091,634NoForm 4
Ison JamesCPOSep 23, 2024Sep 25, 2024G8,227$0.00$0206,641NoForm 4
Morrison John W Jr.Chief Financial OfficerAug 20, 2024Aug 21, 2024F4,059$2.16$8,767311,342NoForm 4
Ison JamesCPOAug 20, 2024Aug 21, 2024F3,271$2.16$7,065110,363NoForm 4
Ison JamesCPOAug 20, 2024Aug 21, 2024G6,062$0.00$0104,301NoForm 4
Ison JamesCPOAug 20, 2024Aug 21, 2024G6,062$0.00$0198,414NoForm 4
Manko Joseph M. Jr.Aug 14, 2024Aug 15, 2024P25,000$1.99Purchase +$49,7501,174,899NoForm 4
Manko Joseph M. Jr.Aug 13, 2024Aug 15, 2024P50,000$1.94Purchase +$97,0001,149,899NoForm 4
Potashner Kenneth FJul 9, 2024Jul 11, 2024M40,000$0.46$18,400398,601NoForm 4
Potashner Kenneth FJul 9, 2024Jul 11, 2024M · derivative40,000$0.46$18,400not reportedNoForm 4
Manko Joseph M. Jr.Jul 1, 2024Jul 3, 2024A21,000$0.00$021,000NoForm 4
Knowles MichaelChief Executive OfficerJul 1, 2024Jul 3, 2024A131,450$0.00$0494,530NoForm 4
Dumont Michael J.Jul 1, 2024Jul 3, 2024A21,000$0.00$021,000NoForm 4
Herbets Mitchell HJul 1, 2024Jul 3, 2024A21,000$0.00$021,000NoForm 4
Messinger GioiaJul 1, 2024Jul 3, 2024A21,000$0.00$049,690NoForm 4
Matz Gregory WJul 1, 2024Jul 3, 2024A21,000$0.00$053,930NoForm 4
Potashner Kenneth FJul 1, 2024Jul 3, 2024A21,000$0.00$0358,601NoForm 4
Morrison John W Jr.Chief Financial OfficerJul 1, 2024Jul 3, 2024A71,300$0.00$0315,401NoForm 4
Ison JamesCPOJul 1, 2024Jul 3, 2024A44,300$0.00$0113,634NoForm 4
Knowles MichaelChief Executive OfficerJun 17, 2024Jun 18, 2024F38,050$2.18$82,949363,080NoForm 4
Morrison John W Jr.Chief Financial OfficerMay 23, 2024May 28, 2024F1,257$2.41$3,029244,101NoForm 4
Ison JamesCPOMay 23, 2024May 28, 2024F1,031$2.41$2,48570,803NoForm 4
Ison JamesCPOMay 23, 2024May 28, 2024G1,469$0.00$069,334NoForm 4
Ison JamesCPOMay 23, 2024May 28, 2024G1,469$0.00$0192,352NoForm 4
Raun DavidApr 1, 2024Apr 3, 2024M13,953$2.15$29,999425,597NoForm 4
Raun DavidApr 1, 2024Apr 3, 2024M · derivative13,953$2.15$29,999not reportedNoForm 4
Potashner Kenneth FApr 1, 2024Apr 3, 2024M19,767$2.15$42,499337,601NoForm 4
Potashner Kenneth FApr 1, 2024Apr 3, 2024M · derivative19,767$2.15$42,499not reportedNoForm 4
Morrison John W Jr.Chief Financial OfficerMar 25, 2024Mar 27, 2024F12,504$3.90$48,766245,358NoForm 4
Ison JamesCPOMar 25, 2024Mar 27, 2024F9,677$3.90$37,74087,490NoForm 4
Ison JamesCPOMar 25, 2024Mar 27, 2024G15,656$0.00$071,834NoForm 4
Ison JamesCPOMar 25, 2024Mar 27, 2024G15,656$0.00$0190,883NoForm 4
Morrison John W Jr.Chief Financial OfficerFeb 5, 2024Feb 7, 2024F4,624$2.01$9,294257,862NoForm 4
Ison JamesCPOFeb 5, 2024Feb 7, 2024F3,766$2.01$7,570102,734NoForm 4
Ison JamesCPOFeb 5, 2024Feb 7, 2024G5,567$0.00$097,167NoForm 4
Ison JamesCPOFeb 5, 2024Feb 7, 2024G5,567$0.00$0175,227NoForm 4
Ison JamesCPOJan 29, 2024Jan 30, 2024M7,222$1.08$7,800169,660NoForm 4
Ison JamesCPOJan 29, 2024Jan 30, 2024M · derivative7,222$1.08$7,80016,769NoForm 4
Cooper Steve DJan 22, 2024Jan 24, 2024S206,040$1.81Sale −$372,9321,923,572NoForm 4
Ison JamesCPONov 21, 2023Nov 21, 2023F849$2.09$1,774108,151NoForm 4
Ison JamesCPONov 21, 2023Nov 21, 2023G1,651$0.00$0106,500NoForm 4
Ison JamesCPONov 21, 2023Nov 21, 2023G1,651$0.00$0162,438NoForm 4
Morrison John W Jr.Chief Financial OfficerNov 21, 2023Nov 21, 2023F1,232$2.09$2,575262,486NoForm 4
Ison JamesCPONov 17, 2023Nov 20, 2023F2,463$1.99$4,901113,204NoForm 4
Ison JamesCPONov 17, 2023Nov 20, 2023G4,204$0.00$0109,000NoForm 4
Ison JamesCPONov 17, 2023Nov 20, 2023G4,204$0.00$0160,787NoForm 4
Morrison John W Jr.Chief Financial OfficerNov 17, 2023Nov 20, 2023F2,463$1.99$4,901263,718NoForm 4