Christopher D. Brown

Director · 908 Devices

Christopher D. Brown (Director) filed 9 Form 4 reports in the trailing twelve months (0 purchases, 9 sales), most often in 908 Devices Inc. (MASS). The largest single filing was $357K of MASS (30,000 sh × $11.89, as filed), executed Oct 7. Data as of Nov 7 2026.

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Return, ttmiAverage return per filing, trailing twelve months

–

no purchases on file

Delay-adjustediThe same average, entered at disclosure dates

–

returns measure stock purchases only

Filings, ttm

0 buys · 9 sells

Median delay

–

measured on stock purchases

Volume, ttmiDollar value disclosed in the trailing twelve months

$2.2M

shares × price, as filed

Last traded

Nov 4

Filed yesterday

Median ADV $3.5M across their filed names

Open performance→

Volume by month

Buys $0 Sells $2.2M

Shares × price, as filed · by filing month · past 24 months

Sectors filed on

Healthcare 9 filings

Sector per market data · by filing · past 12 months

Most traded names

MASS

908 Devices Inc. MASS · 0 buys · 9 sells 9 filings

Recent filings

MASSSALE 908 Devices Inc. View filing → $328K
30,000 sh × $10.95
Exec Nov 4
Filed Nov 6 · 4:30 PM ET MASSSALE 908 Devices Inc. View filing → $357K
30,000 sh × $11.89
Exec Oct 7
Filed Oct 9 · 4:15 PM ET MASSSALE 908 Devices Inc. View filing → $317K
30,000 sh × $10.58
Exec Sep 2
Filed Sep 4 · 4:15 PM ET MASSSALE 908 Devices Inc. View filing → $170K
20,000 sh × $8.49
Exec Aug 5
Filed Aug 7 · 4:50 PM ET MASSSALE 908 Devices Inc. View filing → $177K
20,000 sh × $8.84
Exec Jun 30
Filed Jul 2 · 4:15 PM ET MASSSALE 908 Devices Inc. View filing → $175K
20,000 sh × $8.73
Exec Jun 3
Filed Jun 4 · 5:30 PM ET MASSSALE 908 Devices Inc. View filing → $270K
30,000 sh × $9.00
Exec May 28
Filed May 29 · 5:30 PM ET MASSSALE 908 Devices Inc. View filing → $145K
20,000 sh × $7.23
Exec May 6
Filed May 7 · 5:30 PM ET More filings →