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Knopp Kevin J.

Disclosed activity across 1 company

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22795
SEC CIK
0001836523

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
908 Devices Inc.MASS · Entity 5564Director · President and CEOAugust 13, 2026August 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 August 13, 2026 · Filed August 17, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect555,968 Ending reported balance After 2026-08-17 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2026-08-13 · Sale · Disposed 7,622 · Balance 575,968

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 20, 2025.

F2: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.05 to $10.12 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 2 · 2026-08-17 · Sale · Disposed 20,000 · Balance 555,968

F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 20, 2025.

F3: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.08 to $10.45 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.

Common StockSEC Table I · non-derivativeIndirectSee footnote541,223 Reported balance Holding disclosure · report date 2026-08-13 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 541,223

F4: The shares are owned directly by The Kevin J. Knopp Irrevocable Trust of 2018. The reporting person's brother-in-law is the trustee of The Kevin J. Knopp Irrevocable Trust of 2018 and has sole voting and dispositive control with respect to all securities held by such trust. The reporting person may be deemed to be the beneficial owner of the securities held by The Kevin J. Knopp Irrevocable Trust of 2018.

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 May 20, 2025.

F2: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.05 to $10.12 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 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.08 to $10.45 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 are owned directly by The Kevin J. Knopp Irrevocable Trust of 2018. The reporting person's brother-in-law is the trustee of The Kevin J. Knopp Irrevocable Trust of 2018 and has sole voting and dispositive control with respect to all securities held by such trust. The reporting person may be deemed to be the beneficial owner of the securities held by The Kevin J. Knopp Irrevocable Trust of 2018.

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
August 16, 2021 Filed Aug 18, 2021 20:57 UTC 908 Devices Inc. MASS · Entity 5564 SaleCommon Stock, par value $0.001 6,035 $30.76 $185,636.60
Disclosure

SEC source: 0001562180-21-005423 · primarydocument.xml · nonDerivative · entry 2

Knopp Kevin J. · CIK 0001836523 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 802,360

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

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.38 to $31.08, 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
August 16, 2021 Filed Aug 18, 2021 20:57 UTC 908 Devices Inc. MASS · Entity 5564 SaleCommon Stock, par value $0.001 3,443 $31.22 $107,490.46
Disclosure

SEC source: 0001562180-21-005423 · primarydocument.xml · nonDerivative · entry 1

Knopp Kevin J. · CIK 0001836523 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 808,395

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 $31.09 to $32.08, 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
December 22, 2020 Filed Dec 23, 2020 01:36 UTC 908 Devices Inc. MASS · Entity 5564 ConversionSeries D Preferred Stock · Derivative 4,396 $0.00 $0.00
Disclosure

SEC source: 0001104659-20-138754 · tm2039218d9_4.xml · derivative · entry 4

Knopp Kevin J. · CIK 0001836523 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 4,396 shares

Expires not disclosed

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.

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

Read SEC document
December 22, 2020 Filed Dec 23, 2020 01:36 UTC 908 Devices Inc. MASS · Entity 5564 ConversionSeries B Preferred Stock · Derivative 21,147 $0.00 $0.00
Disclosure

SEC source: 0001104659-20-138754 · tm2039218d9_4.xml · derivative · entry 3

Knopp Kevin J. · CIK 0001836523 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 21,147 shares

Expires not disclosed

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.

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

Read SEC document
December 22, 2020 Filed Dec 23, 2020 01:36 UTC 908 Devices Inc. MASS · Entity 5564 ConversionSeries A Preferred Stock · Derivative 63,074 $0.00 $0.00
Disclosure

SEC source: 0001104659-20-138754 · tm2039218d9_4.xml · derivative · entry 2

Knopp Kevin J. · CIK 0001836523 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 63,074 shares

Expires not disclosed

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.

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

Read SEC document
December 22, 2020 Filed Dec 23, 2020 01:36 UTC 908 Devices Inc. MASS · Entity 5564 ConversionCommon Stock, par value $0.001 88,617 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-20-138754 · tm2039218d9_4.xml · nonDerivative · entry 1

Knopp Kevin J. · CIK 0001836523 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,353,061

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.

F1 · price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

Read SEC document
December 22, 2020 Filed May 1, 2021 00:50 UTC Amendment 908 Devices Inc. MASS · Entity 5564 ConversionSeries D Preferred Stock · Derivative 1,758 $0.00 $0.00
Disclosure

SEC source: 0001104659-21-059345 · tm2114833-2_4seq1.xml · derivative · entry 8

Knopp Kevin J. · CIK 0001836523 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 1,758 shares

Expires not disclosed

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.

F1 · security: The original Form 4, filed December 22, 2020, is being amended by this Form 4 amendment solely to correct an administrative error related to the nature of the beneficial ownership of shares held by the reporting person. Due to an administrative error, those shares were reported as being held directly by the reporting person, instead of held indirectly through the reporting person's trust, for which the reporting person may be deemed to be the beneficial owner. This Form 4 corrects such error by adding line items for the amount of securities indirectly owned by the reporting person's trust and decreasing the total amount of securities directly owned by the reporting person accordingly.

F2 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F3 · ownership.nature: The shares are owned directly by The Kevin J. Knopp Irrevocable Trust of 2018. The reporting person's brother-in-law is the trustee of The Kevin J. KnoppIrrevocable Trust of 2018 and has sole voting and dispositive control with respect to all securities held by such trust. The reporting person may be deemed tobe the beneficial owner of the securities held by The Kevin J. Knopp Irrevocable Trust of 2018.

Read SEC document
December 22, 2020 Filed May 1, 2021 00:50 UTC Amendment 908 Devices Inc. MASS · Entity 5564 ConversionSeries D Preferred Stock · Derivative 2,638 $0.00 $0.00
Disclosure

SEC source: 0001104659-21-059345 · tm2114833-2_4seq1.xml · derivative · entry 7

Knopp Kevin J. · CIK 0001836523 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 2,638 shares

Expires not disclosed

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.

F1 · security: The original Form 4, filed December 22, 2020, is being amended by this Form 4 amendment solely to correct an administrative error related to the nature of the beneficial ownership of shares held by the reporting person. Due to an administrative error, those shares were reported as being held directly by the reporting person, instead of held indirectly through the reporting person's trust, for which the reporting person may be deemed to be the beneficial owner. This Form 4 corrects such error by adding line items for the amount of securities indirectly owned by the reporting person's trust and decreasing the total amount of securities directly owned by the reporting person accordingly.

F2 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

Read SEC document
December 22, 2020 Filed May 1, 2021 00:50 UTC Amendment 908 Devices Inc. MASS · Entity 5564 ConversionSeries B Preferred Stock · Derivative 8,459 $0.00 $0.00
Disclosure

SEC source: 0001104659-21-059345 · tm2114833-2_4seq1.xml · derivative · entry 6

Knopp Kevin J. · CIK 0001836523 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 8,459 shares

Expires not disclosed

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.

F1 · security: The original Form 4, filed December 22, 2020, is being amended by this Form 4 amendment solely to correct an administrative error related to the nature of the beneficial ownership of shares held by the reporting person. Due to an administrative error, those shares were reported as being held directly by the reporting person, instead of held indirectly through the reporting person's trust, for which the reporting person may be deemed to be the beneficial owner. This Form 4 corrects such error by adding line items for the amount of securities indirectly owned by the reporting person's trust and decreasing the total amount of securities directly owned by the reporting person accordingly.

F2 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F3 · ownership.nature: The shares are owned directly by The Kevin J. Knopp Irrevocable Trust of 2018. The reporting person's brother-in-law is the trustee of The Kevin J. KnoppIrrevocable Trust of 2018 and has sole voting and dispositive control with respect to all securities held by such trust. The reporting person may be deemed tobe the beneficial owner of the securities held by The Kevin J. Knopp Irrevocable Trust of 2018.

Read SEC document
December 22, 2020 Filed May 1, 2021 00:50 UTC Amendment 908 Devices Inc. MASS · Entity 5564 ConversionSeries B Preferred Stock · Derivative 12,688 $0.00 $0.00
Disclosure

SEC source: 0001104659-21-059345 · tm2114833-2_4seq1.xml · derivative · entry 5

Knopp Kevin J. · CIK 0001836523 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 12,688 shares

Expires not disclosed

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.

F1 · security: The original Form 4, filed December 22, 2020, is being amended by this Form 4 amendment solely to correct an administrative error related to the nature of the beneficial ownership of shares held by the reporting person. Due to an administrative error, those shares were reported as being held directly by the reporting person, instead of held indirectly through the reporting person's trust, for which the reporting person may be deemed to be the beneficial owner. This Form 4 corrects such error by adding line items for the amount of securities indirectly owned by the reporting person's trust and decreasing the total amount of securities directly owned by the reporting person accordingly.

F2 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

Read SEC document
December 22, 2020 Filed May 1, 2021 00:50 UTC Amendment 908 Devices Inc. MASS · Entity 5564 ConversionSeries A Preferred Stock · Derivative 25,229 $0.00 $0.00
Disclosure

SEC source: 0001104659-21-059345 · tm2114833-2_4seq1.xml · derivative · entry 4

Knopp Kevin J. · CIK 0001836523 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 25,229 shares

Expires not disclosed

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.

F1 · security: The original Form 4, filed December 22, 2020, is being amended by this Form 4 amendment solely to correct an administrative error related to the nature of the beneficial ownership of shares held by the reporting person. Due to an administrative error, those shares were reported as being held directly by the reporting person, instead of held indirectly through the reporting person's trust, for which the reporting person may be deemed to be the beneficial owner. This Form 4 corrects such error by adding line items for the amount of securities indirectly owned by the reporting person's trust and decreasing the total amount of securities directly owned by the reporting person accordingly.

F2 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F3 · ownership.nature: The shares are owned directly by The Kevin J. Knopp Irrevocable Trust of 2018. The reporting person's brother-in-law is the trustee of The Kevin J. KnoppIrrevocable Trust of 2018 and has sole voting and dispositive control with respect to all securities held by such trust. The reporting person may be deemed tobe the beneficial owner of the securities held by The Kevin J. Knopp Irrevocable Trust of 2018.

Read SEC document
December 22, 2020 Filed May 1, 2021 00:50 UTC Amendment 908 Devices Inc. MASS · Entity 5564 ConversionSeries A Preferred Stock · Derivative 37,845 $0.00 $0.00
Disclosure

SEC source: 0001104659-21-059345 · tm2114833-2_4seq1.xml · derivative · entry 3

Knopp Kevin J. · CIK 0001836523 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, par value $0.001 · 37,845 shares

Expires not disclosed

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.

F1 · security: The original Form 4, filed December 22, 2020, is being amended by this Form 4 amendment solely to correct an administrative error related to the nature of the beneficial ownership of shares held by the reporting person. Due to an administrative error, those shares were reported as being held directly by the reporting person, instead of held indirectly through the reporting person's trust, for which the reporting person may be deemed to be the beneficial owner. This Form 4 corrects such error by adding line items for the amount of securities indirectly owned by the reporting person's trust and decreasing the total amount of securities directly owned by the reporting person accordingly.

F2 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F2 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

Read SEC document
December 22, 2020 Filed May 1, 2021 00:50 UTC Amendment 908 Devices Inc. MASS · Entity 5564 ConversionCommon Stock, par value $0.001 35,446 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-21-059345 · tm2114833-2_4seq1.xml · nonDerivative · entry 2

Knopp Kevin J. · CIK 0001836523 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 541,223

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.

F1 · security: The original Form 4, filed December 22, 2020, is being amended by this Form 4 amendment solely to correct an administrative error related to the nature of the beneficial ownership of shares held by the reporting person. Due to an administrative error, those shares were reported as being held directly by the reporting person, instead of held indirectly through the reporting person's trust, for which the reporting person may be deemed to be the beneficial owner. This Form 4 corrects such error by adding line items for the amount of securities indirectly owned by the reporting person's trust and decreasing the total amount of securities directly owned by the reporting person accordingly.

F2 · price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

F3 · ownership.nature: The shares are owned directly by The Kevin J. Knopp Irrevocable Trust of 2018. The reporting person's brother-in-law is the trustee of The Kevin J. KnoppIrrevocable Trust of 2018 and has sole voting and dispositive control with respect to all securities held by such trust. The reporting person may be deemed tobe the beneficial owner of the securities held by The Kevin J. Knopp Irrevocable Trust of 2018.

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December 22, 2020 Filed May 1, 2021 00:50 UTC Amendment 908 Devices Inc. MASS · Entity 5564 ConversionCommon Stock, par value $0.001 53,171 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-21-059345 · tm2114833-2_4seq1.xml · nonDerivative · entry 1

Knopp Kevin J. · CIK 0001836523 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 811,838

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.

F1 · security: The original Form 4, filed December 22, 2020, is being amended by this Form 4 amendment solely to correct an administrative error related to the nature of the beneficial ownership of shares held by the reporting person. Due to an administrative error, those shares were reported as being held directly by the reporting person, instead of held indirectly through the reporting person's trust, for which the reporting person may be deemed to be the beneficial owner. This Form 4 corrects such error by adding line items for the amount of securities indirectly owned by the reporting person's trust and decreasing the total amount of securities directly owned by the reporting person accordingly.

F2 · price: Each share of Series A Preferred Stock, Series B Preferred Stock and Series D Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

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