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908 Devices Inc.

MASS Net selling

CIK 0001555279 #3233 in the set updated 17 Sep 2026

Bought (12 mo)

$0.00

out of their own pocket, the only kind of buying there is

Sold (12 mo)

$8.84M

$4.41M on a plan · $241.15K straight out of an exercise

Sold at will

$4.19M

18 of 53 sales

Net

−$8.84M

−$4.19M against sales at will

By person

16 insiders · 53 transactions

Insider

Role

Bought

Sold

Net

Holding

Worth

Change

AWM Investment Company, Inc. entity

10% owner

—

$3.68M (15)

−$3.68M

9,667,264

$102.28M

−4.2%

Knopp Kevin J.

President and CEO

—

$2.55M (12) scheduled

−$2.55M

555,968

$5.88M

+9.2%

Brown Christopher D.

Director

—

$1.81M (14) scheduled

−$1.81M

775,559

$8.21M

−13.0%

Griffith Joseph H. IV

Chief Financial Officer

—

$411.95K (6) scheduled

−$411.95K

121,497

$1.29M

+30.0%

Kenneweg John

SVP, Sales & Product Marketing

—

$201.23K (2)

−$201.23K

57,784

$611.35K

0.0%

McCallion Kevin J.

SVP, Products and Production

—

$188.02K (4) scheduled

−$188.02K

44,925

$475.31K

0.0%

HRUSOVSKY E KEVIN

Director

—

165,390

$1.75M

+18.2%

Spoto Mark

Director

—

89,346

$945.28K

+68.7%

Hunt Anthony

Director

—

44,168

$467.30K

+165.1%

ELOI FENEL M

Director

—

40,897

$432.69K

+164.7%

CRANDELL KEITH

Director

—

39,374

$416.58K

+182.7%

Leonhart Michele M.

Director

—

27,054

$286.23K

—

George Jeffrey P.

Director

—

26,814

$283.69K

+73.6%

Eisenberg Marcia

Director

—

25,957

$274.63K

+77.9%

Vann Brandi C

Director

—

5,192

$54.93K

—

Turner Michael S.

Chief Legal & Admin Officer

—

$0.00

−100.0%

No percentages here. These insiders hold more than one class of share between them, and the share count on file covers one of them rather than all. Dividing the two would compare different things.

Individual transactions

Insider

Date

Role

Action

Price

Amount

Kenneweg John

1 May 2026

SVP, Sales & Product Marketing

Sold after exercise

7,787

$6.83

$53.19K

McCallion Kevin J.

10 Apr 2026

SVP, Products and Production

Sold after exercise

2,693

$7.01

$18.88K

McCallion Kevin J.

9 Apr 2026

SVP, Products and Production

Sold after exercise

5,420

$7.03

$38.10K

McCallion Kevin J.

8 Apr 2026

SVP, Products and Production

Sold after exercise

18,580

$7.05

$130.99K

Show all 53 transactions →

What was left out

Form 4 filings counted 47

Amendments (4/A) skipped 1

Filings about a different issuer 0

Unreadable filings 0

Joint filings 0

Sales on a Rule 10b5-1 plan 31

Sales straight out of an exercise 4

Sales at will 18

Transactions with no price 0

Shares from compensation/vesting 353,272

History held since 21 Dec 2020