MASS
Ticker
908 Devices Inc.
MASS · Healthcare · 908 Devices Inc. provides purpose-built handheld mass spectrometry and fourier transform infrared (FTIR) devices for use in vital health an…908 Devices Inc. (MASS), in the Healthcare sector, has 24 disclosed filings on Paydirt over the trailing twelve months from 6 corporate insiders: 0 purchases and 24 sales. Filers took a median of 2 days from execution to disclosure, and the most recent trade was executed Nov 4 and filed Nov 6. The most active filer was Christopher D. Brown with 9 filings. Data as of Nov 8 2026.
Add to watchlistFilings, ttm
24
0 buys · 24 sells
Traders, ttm
6
6 insiders
Volume, ttmiDollar value disclosed in the window
$8.9M
estimated for Congress, as filed for insiders
Median delay
2d
execution to disclosure
Last traded
Nov 4
Filed Nov 6
ADViAverage daily dollar volume
$3.5M
market data
Share price · 12M
$10.56 (+65.1%)
Adjusted for splits and dividends.
Volume by month
Buys $0
Sells $9.0M
Estimated for Congress, as filed for insiders · by filing month · past 24 months
Who filed · past 24 months
CBRecent filings
Christopher D. BrownSALE
Director
$328K30,000 sh × $10.95
Exec Nov 4
Filed Nov 6 · 4:30 PM ET Christopher D. BrownSALE Director $357K
30,000 sh × $11.89
Exec Oct 7
Filed Oct 9 · 4:15 PM ET AWM Investment Company, Inc.SALE 10% owner $207K
18,000 sh × $11.52
Exec Sep 29
Filed Oct 1 · 5:02 PM ET John KennewegSALE SVP, Sales & Product Marketing $216K
21,399 sh × $10.11
Exec Sep 16
Filed Sep 17 · 5:27 PM ET Christopher D. BrownSALE Director $317K
30,000 sh × $10.58
Exec Sep 2
Filed Sep 4 · 4:15 PM ET Joseph H. Griffith IVSALE Chief Financial Officer $125K
11,459 sh × $10.95
Exec Aug 25
Filed Aug 27 · 4:55 PM ET AWM Investment Company, Inc.SALE 10% owner $441K
41,578 sh × $10.61
Exec Aug 21
Filed Aug 24 · 4:50 PM ET Kevin J. KnoppSALE President and CEO $207K
20,000 sh × $10.35
Exec Aug 17
Filed Aug 17 · 5:30 PM ET Kevin J. KnoppSALE President and CEO $1.4M
145,918 sh across 2 lots
Exec Aug 11
Filed Aug 12 · 5:05 PM ET Christopher D. BrownSALE Director $170K
20,000 sh × $8.49
Exec Aug 5
Filed Aug 7 · 4:50 PM ET AWM Investment Company, Inc.SALE 10% owner $418K
50,000 sh × $8.36
Exec Aug 4
Filed Aug 6 · 4:26 PM ET Christopher D. BrownSALE Director $177K
20,000 sh × $8.84
Exec Jun 30
Filed Jul 2 · 4:15 PM ET Kevin J. KnoppSALE President and CEO $520K
56,923 sh across 2 lots
Exec Jun 24
Filed Jun 25 · 5:30 PM ET Christopher D. BrownSALE Director $175K
20,000 sh × $8.73
Exec Jun 3
Filed Jun 4 · 5:30 PM ET AWM Investment Company, Inc.SALE 10% owner $357K
39,782 sh × $8.97
Exec Jun 4
Filed Jun 4 · 5:30 PM ET Christopher D. BrownSALE Director $270K
30,000 sh × $9.00
Exec May 28
Filed May 29 · 5:30 PM ET AWM Investment Company, Inc.SALE 10% owner $1.6M
185,442 sh across 2 lots
Exec May 27
Filed May 29 · 5:30 PM ET John KennewegSALE SVP, Sales & Product Marketing $148K
18,255 sh × $8.11
Exec May 8
Filed May 11 · 5:30 PM ET AWM Investment Company, Inc.SALE 10% owner $567K
70,184 sh across 2 lots
Exec May 6
Filed May 8 · 5:30 PM ET Christopher D. BrownSALE Director $145K
20,000 sh × $7.23
Exec May 6
Filed May 7 · 5:30 PM ET Christopher D. BrownSALE Director $230K
32,608 sh across 2 lots
Exec Apr 8
Filed Apr 10 · 5:30 PM ET Kevin J. McCallionSALE SVP, Products and Production $131K
18,580 sh × $7.05
Exec Apr 8
Filed Apr 10 · 5:30 PM ET Joseph H. Griffith IVSALE Chief Financial Officer $143K
23,175 sh × $6.18
Exec Feb 2
Filed Feb 3 · 5:30 PM ET Kevin J. KnoppSALE President and CEO $215K
34,764 sh × $6.18
Exec Feb 2
Filed Feb 3 · 5:30 PM ET Michael S. TurnerSALE Chief Legal & Admin Officer $121K
16,082 sh × $7.51
Exec Jun 16 2025
Filed Jun 18 2025 · 5:30 PM ET