{"data":[{"accessionNo":"0002100119-26-001540","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0000884269","issuerName":"Alpha Pro Tech Ltd","ticker":"APT","cusip":"020772109","securityClass":"Common Stock","eventDate":"2026-09-30","reportingPerson":"Vanguard Capital Management","reportingCik":null,"personType":"IA","sharesOwned":438457,"percentOfClass":4.29,"filedAt":"2026-10-30","canonicalUrl":"https://xoomar.com/markets/stocks/apt"},{"accessionNo":"0002100119-26-000023","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0000884269","issuerName":"Alpha Pro Tech Ltd","ticker":"APT","cusip":"020772109","securityClass":"Common Stock","eventDate":"2026-03-31","reportingPerson":"Vanguard Capital Management","reportingCik":null,"personType":"IA","sharesOwned":609067,"percentOfClass":5.97,"filedAt":"2026-04-28","canonicalUrl":"https://xoomar.com/markets/stocks/apt"},{"accessionNo":"0000102909-26-000596","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0000884269","issuerName":"Alpha Pro Tech Ltd","ticker":"APT","cusip":"020772109","securityClass":"Common Stock","eventDate":"2026-03-13","reportingPerson":"The Vanguard Group","reportingCik":null,"personType":"IA","sharesOwned":0,"percentOfClass":0,"filedAt":"2026-03-26","canonicalUrl":"https://xoomar.com/markets/stocks/apt"},{"accessionNo":"0000919574-26-001012","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0000884269","issuerName":"Alpha Pro Tech, Ltd.","ticker":"APT","cusip":null,"securityClass":"Common Stock, par value $0.01 per share","eventDate":"2025-12-31","reportingPerson":"NEEDHAM INVESTMENT MANAGEMENT L.L.C.","reportingCik":null,"personType":"IA,OO","sharesOwned":642500,"percentOfClass":6.2,"filedAt":"2026-02-13","canonicalUrl":"https://xoomar.com/markets/stocks/apt"},{"accessionNo":"0000919574-26-001012","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0000884269","issuerName":"Alpha Pro Tech, Ltd.","ticker":"APT","cusip":null,"securityClass":"Common Stock, par value $0.01 per share","eventDate":"2025-12-31","reportingPerson":"NEEDHAM ASSET MANAGEMENT, LLC","reportingCik":null,"personType":"HC,OO","sharesOwned":642500,"percentOfClass":6.2,"filedAt":"2026-02-13","canonicalUrl":"https://xoomar.com/markets/stocks/apt"},{"accessionNo":"0000919574-26-001012","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0000884269","issuerName":"Alpha Pro Tech, Ltd.","ticker":"APT","cusip":null,"securityClass":"Common Stock, par value $0.01 per share","eventDate":"2025-12-31","reportingPerson":"NEEDHAM AGGRESSIVE GROWTH FUND","reportingCik":null,"personType":"IV,OO","sharesOwned":642500,"percentOfClass":6.2,"filedAt":"2026-02-13","canonicalUrl":"https://xoomar.com/markets/stocks/apt"},{"accessionNo":"0000919574-26-001012","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0000884269","issuerName":"Alpha Pro Tech, Ltd.","ticker":"APT","cusip":null,"securityClass":"Common Stock, par value $0.01 per share","eventDate":"2025-12-31","reportingPerson":"GEORGE A. NEEDHAM","reportingCik":null,"personType":"HC,IN","sharesOwned":642500,"percentOfClass":6.2,"filedAt":"2026-02-13","canonicalUrl":"https://xoomar.com/markets/stocks/apt"}],"updatedAt":"2026-11-03T17:39:01.235Z","source":"xoomar.com","docs":"https://xoomar.com/markets/api","license":"https://xoomar.com/terms","attribution":"Credit XOOMAR with a link to the dataset page on xoomar.com when you republish this data","canonicalUrl":"https://xoomar.com/markets/stocks/apt","meta":{"source":"SEC","sourceAttribution":"Schedule 13D and 13G data: SEC.","notice":"10 requests a minute without a key, 30 with a free key. Get a free key at https://xoomar.com/signup?utm_source=api, register your app at https://xoomar.com/developers/register?utm_source=api, and credit the data as \"Data: XOOMAR\" together with the sourceAttribution line."}}