John Kenneweg

MASS

John Kenneweg serves as officer: SVP, Sales & Product Marketing at 908 Devices Inc. (MASS). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

13 trades

$3.29M

Net Position

Net Seller

$3.29M

Companies Traded

MASS

Active Period

Jun 2021 – Sep 2026

13 total trades

Most Recent

Sell MASS

Sep 17, 2026 · $280.1K

John Kenneweg's Insider Trading at 908 Devices Inc. (MASS)

Buys

0 · $0.00

Sells

13 · $3.29M

Total Shares Bought

Total Shares Sold

153,578

MASS Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Sep 17, 2026	Sell	27,656	$10.13	$280.1K	57,784
May 11, 2026	Sell	18,255	$8.11	$148.0K	57,784
May 4, 2026	Sell	7,787	$6.83	$53.2K	76,039
Apr 14, 2022	Sell	9,880	$20.07	$198.3K	0
Mar 21, 2022	Sell	19,881	$20.06	$398.8K	0
Mar 15, 2022	Sell	119	$20.00	$2.4K	0
Jan 12, 2022	Sell	10,000	$20.14	$201.4K	0
Nov 18, 2021	Sell	10,000	$30.32	$303.2K	502
Oct 19, 2021	Sell	10,000	$32.22	$322.2K	0
Sep 17, 2021	Sell	10,000	$36.61	$366.1K	0
Aug 17, 2021	Sell	10,000	$30.45	$304.5K	2,719
Jul 20, 2021	Sell	10,000	$32.27	$322.7K	7,984
Jun 21, 2021	Sell	10,000	$39.27	$392.7K	0