SEC Form 4 reporting owner

Kenneweg John

Kenneweg John has filed 7 Form 4 transactions reported between April 28, 2026 and September 17, 2026, as SVP, Sales & Product Marketing of 908 Devices Inc..

Name as filed: Kenneweg John

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$201K

2 lines

Companies

with Form 4 filings

Latest transaction

Sep 17, 2026

transaction date

Roles and reported holdings

MASS908 Devices Inc.
Apr 28, 2026 – Sep 17, 2026
SVP, Sales & Product Marketing
Held directly57,784 sh as of May 8, 2026 · Form 4
24 months: $201K sold

Transaction history

All 7 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Sep 17, 2026	MASSSVP, Sales & Product Marketing	Option exerciseCode M · direct	5,257	$0.9600	$5K@ $0.9600	63,041	Form 4
Sep 16, 2026	MASSSVP, Sales & Product Marketing	Option exerciseCode M · direct	21,399	$0.9600	$21K@ $0.9600	79,183	Form 4
Sep 15, 2026	MASSSVP, Sales & Product Marketing	Option exerciseCode M · direct	1,000	$0.9600	$960@ $0.9600	58,784	Form 4
May 8, 2026	MASSSVP, Sales & Product Marketing	Open-market saleCode S · direct	18,255	$8.11	$148K@ $8.11	57,784	Form 4
May 1, 2026	MASSSVP, Sales & Product Marketing	Open-market saleCode S · direct	7,787	$6.83	$53K@ $6.83	76,039	Form 4
May 1, 2026	MASSSVP, Sales & Product Marketing	Option exerciseCode M · direct	26,042	—	—	83,826	Form 4
Apr 28, 2026	MASSSVP, Sales & Product Marketing	Grant or awardCode A · direct	26,042	—	—	26,042	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.