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person · Reporting owner

Kenneweg John

Disclosed activity across 1 company

Tapewire entity
48284
SEC CIK
0001836876

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
908 Devices Inc.MASS · Entity 5564SVP, Sales & Product MarketingSeptember 15, 2026September 17, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

908 Devices Inc.

Report date September 15, 2026 · Filed September 17, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect57,784 Ending reported balance After 2026-09-17 transaction · row 6
6 source rows · reconciled sequence

Row 1 · 2026-09-15 · Exercise / conversion · Acquired 1,000 · Balance 58,784

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026.

Row 2 · 2026-09-15 · Sale · Disposed 1,000 · Balance 57,784

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026.

Row 3 · 2026-09-16 · Exercise / conversion · Acquired 21,399 · Balance 79,183

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026.

Row 4 · 2026-09-16 · Sale · Disposed 21,399 · Balance 57,784

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.00 to $10.32 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Row 5 · 2026-09-17 · Exercise / conversion · Acquired 5,257 · Balance 63,041

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026.

Row 6 · 2026-09-17 · Sale · Disposed 5,257 · Balance 57,784

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026.

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.13 to $10.29 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.96 · Expires 2026-12-02Direct26,656 Reported balance After 2026-09-15 transaction · row 7 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 7 · 2026-09-15 · Exercise / conversion · Disposed 1,000 · Balance 26,656

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026.

F4: The shares underlying the option are fully vested and immediately exercisable.

Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.96 · Expires 2026-12-02Direct5,257 Reported balance After 2026-09-16 transaction · row 8 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 8 · 2026-09-16 · Exercise / conversion · Disposed 21,399 · Balance 5,257

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026.

F4: The shares underlying the option are fully vested and immediately exercisable.

Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.96 · Expires 2026-12-02Direct0 Reported balance After 2026-09-17 transaction · row 9 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 9 · 2026-09-17 · Exercise / conversion · Disposed 5,257 · Balance 0

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026.

F4: The shares underlying the option are fully vested and immediately exercisable.

Filing footnotes · ownership attribution and instrument terms

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.00 to $10.32 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.13 to $10.29 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F4: The shares underlying the option are fully vested and immediately exercisable.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
July 16, 2021 Filed Jul 20, 2021 21:43 UTC 908 Devices Inc. MASS · Entity 5564 SaleCommon Stock, par value $0.001 2,016 $31.39 $63,282.24
Disclosure

SEC source: 0001562180-21-005018 · primarydocument.xml · nonDerivative · entry 2

Kenneweg John · CIK 0001836876 · Vice President, Government

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,984

F1 · kind: Represents sales effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.93 to $31.79, inclusive. The reporting person undertakes to provide to 908 Devices Inc., any security holder of 908 Devices Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

Read SEC document
July 16, 2021 Filed Jul 20, 2021 21:43 UTC 908 Devices Inc. MASS · Entity 5564 Exercise / conversionCommon Stock, par value $0.001 10,000 $0.35 $3,500.00
Disclosure

SEC source: 0001562180-21-005018 · primarydocument.xml · nonDerivative · entry 1

Kenneweg John · CIK 0001836876 · Vice President, Government

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 16, 2021 Filed Jun 21, 2021 12:05 UTC 908 Devices Inc. MASS · Entity 5564 Exercise / conversionStock Option (option to buy) · Derivative 10,000 $0.00 Strike: $0.35 $0.00
Disclosure

SEC source: 0001104659-21-083126 · tm2120211-1_4seq1.xml · derivative · entry 3

Kenneweg John · CIK 0001836876 · Vice President, Government

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 143,033

Underlying: Common Stock, par value $0.001 · 153,033 shares

Expires 2023-04-18

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: The shares underlying the option are fully vested and immediately exercisable.

Read SEC document
June 16, 2021 Filed Jun 21, 2021 12:05 UTC 908 Devices Inc. MASS · Entity 5564 SaleCommon Stock, par value $0.001 10,000 $39.27 $392,700.00
Disclosure

SEC source: 0001104659-21-083126 · tm2120211-1_4seq1.xml · nonDerivative · entry 2

Kenneweg John · CIK 0001836876 · Vice President, Government

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · kind: Represents sales effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

Read SEC document
June 16, 2021 Filed Jun 21, 2021 12:05 UTC 908 Devices Inc. MASS · Entity 5564 Exercise / conversionCommon Stock, par value $0.001 10,000 $0.35 $3,500.00
Disclosure

SEC source: 0001104659-21-083126 · tm2120211-1_4seq1.xml · nonDerivative · entry 1

Kenneweg John · CIK 0001836876 · Vice President, Government

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.