Wednesday, October 28, 2026
Data from SEC filings, checked daily
Public filings, plainly told
Insider tradingForm 4

908 Devices Inc. (MASS) Insider Trading

14 open-market trades reported since Aug 17, 2026: 0 purchases worth $0 and 14 sales worth $2.45M.

By insider

InsiderRoleBuysBoughtSellsSoldLatest
Christopher D. BrownDirector0$02$674KOct 9, 2026
Joseph H. Griffith IVCFO0$02$191KOct 8, 2026
Awm Investment Company, Inc.10% owner0$05$1.02MOct 1, 2026
John KennewegSVP0$03$280KSep 17, 2026
Kevin J. KnoppCEO0$02$284KAug 17, 2026
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All trades

MASS insider trades
FiledTradedInsiderRoleTypeSharesPrice ($)ValueHolding3 mo. afterFiling
Oct 9Oct 7Christopher D. BrownDirectorDirector▼ SELL10b5-130,00011.89$357K−3.9%Form 4 ↗
Oct 8Oct 6Joseph H. Griffith IVCFOCFO▼ SELL10b5-15,00013.03$65K−4.1%Form 4 ↗
Oct 1Sep 29Awm Investment Company, Inc.10% owner10% owner (ind.)▼ SELL18,00011.52$207K−0.4%Form 4 ↗
Sep 25Sep 24Awm Investment Company, Inc.10% owner10% owner (ind.)▼ SELL24,00011.36$273K−0.5%Form 4 ↗
Sep 25Sep 23Awm Investment Company, Inc.10% owner10% owner (ind.)▼ SELL1,00011.25$11K+0.0%Form 4 ↗
Sep 17Sep 16John KennewegSVPSVP▼ SELL10b5-121,39910.11$216K−27%Form 4 ↗
Sep 17Sep 17John KennewegSVPSVP▼ SELL10b5-15,25710.22$54K−8.3%Form 4 ↗
Sep 17Sep 15John KennewegSVPSVP▼ SELL10b5-11,00010.00$10K−1.7%Form 4 ↗
Sep 4Sep 2Christopher D. BrownDirectorDirector▼ SELL10b5-130,00010.58$317K−3.7%Form 4 ↗
Aug 27Aug 25Joseph H. Griffith IVCFOCFO▼ SELL10b5-111,45910.95$125K−8.6%Form 4 ↗
Aug 24Aug 21Awm Investment Company, Inc.10% owner10% owner (ind.)▼ SELL41,57810.61$441K−0.9%Form 4 ↗
Aug 24Aug 20Awm Investment Company, Inc.10% owner10% owner (ind.)▼ SELL8,42210.52$89K−0.2%Form 4 ↗
Aug 17Aug 17Kevin J. KnoppCEOCEO▼ SELL10b5-120,00010.35$207K−3.5%Form 4 ↗
Aug 17Aug 13Kevin J. KnoppCEOCEO▼ SELL10b5-17,62210.06$77K−1.3%Form 4 ↗
Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings