Follow the people · Insider
Christopher D. Brown
Christopher D. Brown files insider transactions with the SEC as a chief product officer of 908 Devices (MASS). We hold 14 disclosed purchases and sales filed since 22 December 2020, 7 of them in the last 90 days.
- Files forMASS
- Disclosed buys and sells14 in all, 7 in the last 90 days
- Last disclosure4 September 2026
Positions held
1 post we hold — a term names its own dates; a run of filings only says when they filed- Filed 22 December 2020 — 2 September 2026Chief Product Officer · 908 Devices (MASS)89 Form 4 lines · source: SEC Form 4
Everything they disclosed
89 entries, newest first — one per disclosure report, one per Form 4 line- ▼ sold on the open market 30,000 shares of 908 DevicesSEC Form 44 September 2026Common Stock · traded 2 September 2026 · filed 4 September 2026
- ▼ sold on the open market 9,442 shares of 908 DevicesSEC Form 412 August 2026Common Stock · traded 10 August 2026 · filed 12 August 2026
- ▼ sold on the open market 8,358 shares of 908 DevicesSEC Form 412 August 2026Common Stock · traded 11 August 2026 · filed 12 August 2026
- ▼ sold on the open market 20,000 shares of 908 DevicesSEC Form 47 August 2026Common Stock · traded 5 August 2026 · filed 7 August 2026
- ▼ sold on the open market 2,200 shares of 908 DevicesSEC Form 47 July 2026Common Stock · traded 2 July 2026 · filed 7 July 2026
- ▼ sold on the open market 20,000 shares of 908 DevicesSEC Form 42 July 2026Common Stock · traded 30 June 2026 · filed 2 July 2026
- ▼ sold on the open market 9,900 shares of 908 DevicesSEC Form 425 June 2026Common Stock · traded 23 June 2026 · filed 25 June 2026
- ▼ sold on the open market 100 shares of 908 DevicesSEC Form 45 June 2026Common Stock · traded 4 June 2026 · filed 5 June 2026
- ▼ sold on the open market 20,000 shares of 908 DevicesSEC Form 44 June 2026Common Stock · traded 3 June 2026 · filed 4 June 2026
- ▼ sold on the open market 30,000 shares of 908 DevicesSEC Form 429 May 2026Common Stock · traded 28 May 2026 · filed 29 May 2026
- ▼ sold on the open market 20,000 shares of 908 DevicesSEC Form 47 May 2026Common Stock · traded 6 May 2026 · filed 7 May 2026
- ▼ sold on the open market 15,030 shares of 908 DevicesSEC Form 410 April 2026Common Stock · traded 8 April 2026 · filed 10 April 2026
- ▼ sold on the open market 7,392 shares of 908 DevicesSEC Form 410 April 2026Common Stock · traded 9 April 2026 · filed 10 April 2026
- ▼ sold on the open market 17,578 shares of 908 DevicesSEC Form 410 April 2026Common Stock · traded 10 April 2026 · filed 10 April 2026
- exercised options over 5,027 shares of 908 DevicesSEC Form 43 February 2026Common Stock · traded 1 February 2026 · filed 3 February 2026
- exercised options over 7,418 shares of 908 DevicesSEC Form 43 February 2026Common Stock · traded 1 February 2026 · filed 3 February 2026
- exercised options over 10,992 shares of 908 DevicesSEC Form 43 February 2026Common Stock · traded 1 February 2026 · filed 3 February 2026
- exercised options over 5,027 shares of 908 Devices (a derivative holding)SEC Form 43 February 2026Restricted Stock Units · traded 1 February 2026 · filed 3 February 2026
- exercised options over 7,418 shares of 908 Devices (a derivative holding)SEC Form 43 February 2026Restricted Stock Units · traded 1 February 2026 · filed 3 February 2026
- exercised options over 10,992 shares of 908 Devices (a derivative holding)SEC Form 43 February 2026Restricted Stock Units · traded 1 February 2026 · filed 3 February 2026
- exercised options over 5,027 shares of 908 Devices (a derivative holding)SEC Form 43 February 2026Restricted Stock Units · traded 1 February 2026 · filed 3 February 2026
- exercised options over 7,418 shares of 908 Devices (a derivative holding)SEC Form 43 February 2026Restricted Stock Units · traded 1 February 2026 · filed 3 February 2026
- exercised options over 10,992 shares of 908 Devices (a derivative holding)SEC Form 43 February 2026Restricted Stock Units · traded 1 February 2026 · filed 3 February 2026
- exercised options over 5,027 shares of 908 DevicesSEC Form 43 February 2026Common Stock · traded 1 February 2026 · filed 3 February 2026
- exercised options over 7,418 shares of 908 DevicesSEC Form 43 February 2026Common Stock · traded 1 February 2026 · filed 3 February 2026
- exercised options over 10,992 shares of 908 DevicesSEC Form 43 February 2026Common Stock · traded 1 February 2026 · filed 3 February 2026
- exercised options over 5,027 shares of 908 Devices (a derivative holding)SEC Form 44 February 2025Restricted Stock Units · traded 1 February 2025 · filed 4 February 2025
- exercised options over 7,418 shares of 908 Devices (a derivative holding)SEC Form 44 February 2025Restricted Stock Units · traded 1 February 2025 · filed 4 February 2025
- exercised options over 10,991 shares of 908 Devices (a derivative holding)SEC Form 44 February 2025Restricted Stock Units · traded 1 February 2025 · filed 4 February 2025
- exercised options over 5,027 shares of 908 DevicesSEC Form 44 February 2025Common Stock · traded 1 February 2025 · filed 4 February 2025
- exercised options over 7,418 shares of 908 DevicesSEC Form 44 February 2025Common Stock · traded 1 February 2025 · filed 4 February 2025
- exercised options over 10,991 shares of 908 DevicesSEC Form 44 February 2025Common Stock · traded 1 February 2025 · filed 4 February 2025
- ▼ sold on the open market 1,667 shares of 908 DevicesSEC Form 44 February 2025Common Stock · traded 3 February 2025 · filed 4 February 2025
- ▼ sold on the open market 2,459 shares of 908 DevicesSEC Form 44 February 2025Common Stock · traded 3 February 2025 · filed 4 February 2025
- ▼ sold on the open market 3,641 shares of 908 DevicesSEC Form 44 February 2025Common Stock · traded 3 February 2025 · filed 4 February 2025
- exercised options over 55,131 shares of 908 Devices (a derivative holding)SEC Form 419 December 2024Stock Option (Right to Buy) · traded 19 December 2024 · filed 19 December 2024
- exercised options over 55,131 shares of 908 DevicesSEC Form 419 December 2024Common Stock · traded 19 December 2024 · filed 19 December 2024
- exercised options over 6,328 shares of 908 Devices (a derivative holding)SEC Form 48 August 2024Stock Option (Right to Buy) · traded 7 August 2024 · filed 8 August 2024
- exercised options over 6,328 shares of 908 DevicesSEC Form 48 August 2024Common Stock · traded 7 August 2024 · filed 8 August 2024
- exercised options over 3,600 shares of 908 Devices (a derivative holding)SEC Form 42 April 2024Stock Option (Right to Buy) · traded 1 April 2024 · filed 2 April 2024
- exercised options over 3,600 shares of 908 DevicesSEC Form 42 April 2024Common Stock · traded 1 April 2024 · filed 2 April 2024
- was granted 60,064 shares of 908 Devices (a derivative holding)SEC Form 45 March 2024Stock Option (option to buy) · traded 1 March 2024 · filed 5 March 2024
- was granted 43,965 shares of 908 Devices (a derivative holding)SEC Form 45 March 2024Restricted Stock Units · traded 1 March 2024 · filed 5 March 2024
- exercised options over 5,028 shares of 908 Devices (a derivative holding)SEC Form 42 February 2024Restricted Stock Units · traded 1 February 2024 · filed 2 February 2024
- exercised options over 7,418 shares of 908 Devices (a derivative holding)SEC Form 42 February 2024Restricted Stock Units · traded 1 February 2024 · filed 2 February 2024
- exercised options over 5,028 shares of 908 DevicesSEC Form 42 February 2024Common Stock · traded 1 February 2024 · filed 2 February 2024
- exercised options over 7,418 shares of 908 DevicesSEC Form 42 February 2024Common Stock · traded 1 February 2024 · filed 2 February 2024
- ▼ sold on the open market 1,599 shares of 908 DevicesSEC Form 42 February 2024Common Stock · traded 1 February 2024 · filed 2 February 2024
- ▼ sold on the open market 2,358 shares of 908 DevicesSEC Form 42 February 2024Common Stock · traded 1 February 2024 · filed 2 February 2024
- ▼ sold on the open market 6,090 shares of 908 DevicesSEC Form 421 December 2023Common Stock · traded 19 December 2023 · filed 21 December 2023
- ▼ sold on the open market 1,305 shares of 908 DevicesSEC Form 421 December 2023Common Stock · traded 19 December 2023 · filed 21 December 2023
- ▼ sold on the open market 5,235 shares of 908 DevicesSEC Form 421 December 2023Common Stock · traded 20 December 2023 · filed 21 December 2023
- ▼ sold on the open market 7,370 shares of 908 DevicesSEC Form 421 December 2023Common Stock · traded 21 December 2023 · filed 21 December 2023
- ▼ sold on the open market 4,470 shares of 908 DevicesSEC Form 49 June 2023Common Stock · traded 7 June 2023 · filed 9 June 2023
- ▼ sold on the open market 10,000 shares of 908 DevicesSEC Form 425 May 2023Common Stock, par value $0.001 · traded 23 May 2023 · filed 25 May 2023
- was granted 45,018 shares of 908 Devices (a derivative holding)SEC Form 416 March 2023Stock Option (option to buy) · traded 1 March 2023 · filed 16 March 2023
- was granted 29,672 shares of 908 Devices (a derivative holding)SEC Form 416 March 2023Restricted Stock Unit · traded 1 March 2023 · filed 16 March 2023
- exercised options over 5,027 shares of 908 Devices (a derivative holding)SEC Form 43 February 2023Restricted Stock Unit · traded 1 February 2023 · filed 3 February 2023
- exercised options over 5,027 shares of 908 DevicesSEC Form 43 February 2023Common Stock · traded 1 February 2023 · filed 3 February 2023
- ▼ sold on the open market 1,564 shares of 908 DevicesSEC Form 43 February 2023Common Stock · traded 1 February 2023 · filed 3 February 2023
- ▼ sold on the open market 10,000 shares of 908 DevicesSEC Form 43 February 2023Common Stock · traded 2 February 2023 · filed 3 February 2023
- ▼ sold on the open market 20,000 shares of 908 DevicesSEC Form 414 September 2022Common Stock, par value $0.001 · traded 12 September 2022 · filed 14 September 2022
- ▼ sold on the open market 6,800 shares of 908 DevicesSEC Form 48 July 2022Common Stock, par value $0.001 · traded 6 July 2022 · filed 8 July 2022
- ▼ sold on the open market 3,200 shares of 908 DevicesSEC Form 48 July 2022Common Stock, par value $0.001 · traded 6 July 2022 · filed 8 July 2022
- ▼ sold on the open market 16,471 shares of 908 DevicesSEC Form 41 July 2022Common Stock, par value $0.001 · traded 29 June 2022 · filed 1 July 2022
- ▼ sold on the open market 3,700 shares of 908 DevicesSEC Form 41 July 2022Common Stock, par value $0.001 · traded 30 June 2022 · filed 1 July 2022
- ▼ sold on the open market 9,829 shares of 908 DevicesSEC Form 414 April 2022Common Stock, par value $0.001 · traded 12 April 2022 · filed 14 April 2022
- ▼ sold on the open market 19,900 shares of 908 DevicesSEC Form 421 March 2022Common Stock, par value $0.001 · traded 18 March 2022 · filed 21 March 2022
- ▼ sold on the open market 100 shares of 908 DevicesSEC Form 415 March 2022Common Stock, par value $0.001 · traded 11 March 2022 · filed 15 March 2022
- was granted 33,400 shares of 908 Devices (a derivative holding)SEC Form 43 March 2022Stock Option (option to buy) · traded 1 March 2022 · filed 3 March 2022
- was granted 20,109 shares of 908 Devices (a derivative holding)SEC Form 43 March 2022Restricted Stock Unit · traded 1 March 2022 · filed 3 March 2022
- ▼ sold on the open market 3,286 shares of 908 DevicesSEC Form 47 January 2022Common Stock, par value $0.001 · traded 5 January 2022 · filed 7 January 2022
- ▼ sold on the open market 6,714 shares of 908 DevicesSEC Form 47 January 2022Common Stock, par value $0.001 · traded 5 January 2022 · filed 7 January 2022
- ▼ sold on the open market 8,770 shares of 908 DevicesSEC Form 43 December 2021Common Stock, par value $0.001 · traded 1 December 2021 · filed 3 December 2021
- ▼ sold on the open market 1,230 shares of 908 DevicesSEC Form 43 December 2021Common Stock, par value $0.001 · traded 1 December 2021 · filed 3 December 2021
- ▼ sold on the open market 11,574 shares of 908 DevicesSEC Form 44 November 2021Common Stock, par value $0.001 · traded 3 November 2021 · filed 4 November 2021
- ▼ sold on the open market 3,426 shares of 908 DevicesSEC Form 44 November 2021Common Stock, par value $0.001 · traded 3 November 2021 · filed 4 November 2021
- ▼ sold on the open market 13,420 shares of 908 DevicesSEC Form 47 October 2021Common Stock, par value $0.001 · traded 6 October 2021 · filed 7 October 2021
- ▼ sold on the open market 1,580 shares of 908 DevicesSEC Form 47 October 2021Common Stock, par value $0.001 · traded 6 October 2021 · filed 7 October 2021
- ▼ sold on the open market 8,685 shares of 908 DevicesSEC Form 43 September 2021Common Stock, par value $0.001 · traded 1 September 2021 · filed 3 September 2021
- ▼ sold on the open market 6,315 shares of 908 DevicesSEC Form 43 September 2021Common Stock, par value $0.001 · traded 1 September 2021 · filed 3 September 2021
- ▼ sold on the open market 4,500 shares of 908 DevicesSEC Form 46 August 2021Common Stock, par value $0.001 · traded 4 August 2021 · filed 6 August 2021
- ▼ sold on the open market 5,100 shares of 908 DevicesSEC Form 46 August 2021Common Stock, par value $0.001 · traded 4 August 2021 · filed 6 August 2021
- ▼ sold on the open market 5,400 shares of 908 DevicesSEC Form 46 August 2021Common Stock, par value $0.001 · traded 4 August 2021 · filed 6 August 2021
- ▼ sold on the open market 29,765 shares of 908 DevicesSEC Form 48 July 2021Common Stock, par value $0.001 · traded 7 July 2021 · filed 8 July 2021
- ▼ sold on the open market 5,035 shares of 908 DevicesSEC Form 48 July 2021Common Stock, par value $0.001 · traded 7 July 2021 · filed 8 July 2021
- ▼ sold on the open market 200 shares of 908 DevicesSEC Form 48 July 2021Common Stock, par value $0.001 · traded 7 July 2021 · filed 8 July 2021
- converted 4,396 shares of 908 Devices (a derivative holding)SEC Form 422 December 2020Series D Preferred Stock · traded 22 December 2020 · filed 22 December 2020
- converted 4,396 shares of 908 DevicesSEC Form 422 December 2020Common Stock, par value $0.001 · traded 22 December 2020 · filed 22 December 2020
Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.