Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| 908 Devices Inc.MASS · Entity 5564 | SVP, Products and Production | April 10, 2026 | April 14, 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 April 10, 2026 · Filed April 14, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 44,925 |
Ending reported balance
After 2026-04-10 transaction · row 2
2 source rows · reconciled sequenceRow 1 · 2026-04-10 · Exercise / conversion · Acquired 2,693 · Balance 47,618 F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. Row 2 · 2026-04-10 · Sale · Disposed 2,693 · Balance 44,925 F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.00 to $7.03 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 $1.05 · Expires 2030-08-27 | Direct | 0 |
Reported balance
After 2026-04-10 transaction · row 3
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 3 · 2026-04-10 · Exercise / conversion · Disposed 2,693 · Balance 0 F1: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. F3: The shares underlying the option are fully vested and immediately exercisable. F4: Due to a scrivener's error on the Form 3, the number of stock options beneficially owned by the Reporting Person pursuant to this grant was understated by 7. Following this transaction, the entire option grant has been exercised. |
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 December 9, 2025.
F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.00 to $7.03 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 shares underlying the option are fully vested and immediately exercisable.
F4: Due to a scrivener's error on the Form 3, the number of stock options beneficially owned by the Reporting Person pursuant to this grant was understated by 7. Following this transaction, the entire option grant has been exercised.
Transaction history
JSON APIPurchases/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 date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| April 10, 2026 Filed Apr 14, 2026 20:00 UTC | 908 Devices Inc. MASS · Entity 5564 | Exercise / conversionStock Option (right to buy) · Derivative | 2,693 | $0.00 Strike: $1.05 | $0.00 |
DisclosureSEC source: 0002115341-26-000012 · form4-04142026_040401.xml · derivative · entry 3 McCallion Kevin J. · CIK 0002115341 · SVP, Products and Production 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 2,693 shares Expires 2030-08-27 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 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. F3 · derivative.exercise_date: The shares underlying the option are fully vested and immediately exercisable. F4 · balance_after: Due to a scrivener's error on the Form 3, the number of stock options beneficially owned by the Reporting Person pursuant to this grant was understated by 7. Following this transaction, the entire option grant has been exercised. Read SEC document |
| April 10, 2026 Filed Apr 14, 2026 20:00 UTC | 908 Devices Inc. MASS · Entity 5564 | SaleCommon Stock | 2,693 | $7.01 | $18,877.93 |
DisclosureSEC source: 0002115341-26-000012 · form4-04142026_040401.xml · nonDerivative · entry 2 McCallion Kevin J. · CIK 0002115341 · SVP, Products and Production 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 44,925 F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.00 to $7.03 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. Read SEC document |
| April 10, 2026 Filed Apr 14, 2026 20:00 UTC | 908 Devices Inc. MASS · Entity 5564 | Exercise / conversionCommon Stock | 2,693 | $1.05 | $2,827.65 |
DisclosureSEC source: 0002115341-26-000012 · form4-04142026_040401.xml · nonDerivative · entry 1 McCallion Kevin J. · CIK 0002115341 · SVP, Products and Production 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 47,618 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 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. Read SEC document |
| April 09, 2026 Filed Apr 10, 2026 23:31 UTC | 908 Devices Inc. MASS · Entity 5564 | Exercise / conversionStock Option (right to buy) · Derivative | 5,420 | $0.00 Strike: $1.05 | $0.00 |
DisclosureSEC source: 0002115341-26-000010 · form4-04102026_110423.xml · derivative · entry 6 McCallion Kevin J. · CIK 0002115341 · SVP, Products and Production 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 2,686 Underlying: Common Stock · 5,420 shares Expires 2030-08-27 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 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. F4 · derivative.exercise_date: The shares underlying the option are fully vested and immediately exercisable. Read SEC document |
| April 09, 2026 Filed Apr 10, 2026 23:31 UTC | 908 Devices Inc. MASS · Entity 5564 | SaleCommon Stock | 5,420 | $7.03 | $38,102.60 |
DisclosureSEC source: 0002115341-26-000010 · form4-04102026_110423.xml · nonDerivative · entry 4 McCallion Kevin J. · CIK 0002115341 · SVP, Products and Production 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 44,925 F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.00 to $7.09 inclusive. Read SEC document |
| April 09, 2026 Filed Apr 10, 2026 23:31 UTC | 908 Devices Inc. MASS · Entity 5564 | Exercise / conversionCommon Stock | 5,420 | $1.05 | $5,691.00 |
DisclosureSEC source: 0002115341-26-000010 · form4-04102026_110423.xml · nonDerivative · entry 3 McCallion Kevin J. · CIK 0002115341 · SVP, Products and Production 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 50,345 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 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. Read SEC document |
| April 08, 2026 Filed Apr 10, 2026 23:31 UTC | 908 Devices Inc. MASS · Entity 5564 | Exercise / conversionStock Option (right to buy) · Derivative | 18,580 | $0.00 Strike: $1.05 | $0.00 |
DisclosureSEC source: 0002115341-26-000010 · form4-04102026_110423.xml · derivative · entry 5 McCallion Kevin J. · CIK 0002115341 · SVP, Products and Production 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 8,106 Underlying: Common Stock · 18,580 shares Expires 2030-08-27 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 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. F4 · derivative.exercise_date: The shares underlying the option are fully vested and immediately exercisable. Read SEC document |
| April 08, 2026 Filed Apr 10, 2026 23:31 UTC | 908 Devices Inc. MASS · Entity 5564 | SaleCommon Stock | 18,580 | $7.05 | $130,989.00 |
DisclosureSEC source: 0002115341-26-000010 · form4-04102026_110423.xml · nonDerivative · entry 2 McCallion Kevin J. · CIK 0002115341 · SVP, Products and Production 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 44,925 F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.00 to $7.25 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 ranges set forth in footnotes (2) and (3). Read SEC document |
| April 08, 2026 Filed Apr 10, 2026 23:31 UTC | 908 Devices Inc. MASS · Entity 5564 | Exercise / conversionCommon Stock | 18,580 | $1.05 | $19,509.00 |
DisclosureSEC source: 0002115341-26-000010 · form4-04102026_110423.xml · nonDerivative · entry 1 McCallion Kevin J. · CIK 0002115341 · SVP, Products and Production 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 63,505 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 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. Read SEC document |
| March 02, 2026 Filed Mar 4, 2026 21:07 UTC | 908 Devices Inc. MASS · Entity 5564 | SaleCommon Stock | 7 | $7.00 | $49.00 |
DisclosureSEC source: 0002115341-26-000005 · form4-03042026_090310.xml · nonDerivative · entry 1 McCallion Kevin J. · CIK 0002115341 · SVP, Products and Production 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 44,918 F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. Read SEC document |
| March 02, 2026 Filed Mar 5, 2026 21:50 UTC Amendment | 908 Devices Inc. MASS · Entity 5564 | Exercise / conversionStock Option (right to buy) · Derivative | 7 | $0.00 Strike: $1.05 | $0.00 |
DisclosureSEC source: 0002115341-26-000008 · form4a-03052026_090338.xml · derivative · entry 3 McCallion Kevin J. · CIK 0002115341 · SVP, Products and Production 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 26,686 Underlying: Common Stock · 7 shares Expires 2030-08-27 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 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. F2 · derivative.exercise_date: The shares underlying the option are fully vested and immediately exercisable. Read SEC document |
| March 02, 2026 Filed Mar 5, 2026 21:50 UTC Amendment | 908 Devices Inc. MASS · Entity 5564 | SaleCommon Stock | 7 | $7.00 | $49.00 |
DisclosureSEC source: 0002115341-26-000008 · form4a-03052026_090338.xml · nonDerivative · entry 2 McCallion Kevin J. · CIK 0002115341 · SVP, Products and Production 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 44,925 F1 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. Read SEC document |
| March 02, 2026 Filed Mar 5, 2026 21:50 UTC Amendment | 908 Devices Inc. MASS · Entity 5564 | Exercise / conversionCommon Stock | 7 | $1.05 | $7.35 |
DisclosureSEC source: 0002115341-26-000008 · form4a-03052026_090338.xml · nonDerivative · entry 1 McCallion Kevin J. · CIK 0002115341 · SVP, Products and Production 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 44,932 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 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. 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.