Follow the people · Insider
Ramiro Guerrero
Ramiro Guerrero files insider transactions with the SEC as a director of MAIA Biotechnology (MAIA). We hold 5 disclosed purchases and sales filed since 2 August 2022, 5 of them in the last 90 days.
- Files forMAIA
- Disclosed buys and sells5 in all, 5 in the last 90 days
- Last disclosure1 September 2026
Positions held
1 post we hold — a term names its own dates; a run of filings only says when they filed- Filed 28 July 2022 — 28 August 2026Director · MAIA Biotechnology (MAIA)49 Form 4 lines · source: SEC Form 4
Everything they disclosed
49 entries, newest first — one per disclosure report, one per Form 4 line- ▲ bought on the open market 8,931 shares of MAIA BiotechnologySEC Form 41 September 2026Common Stock · traded 26 August 2026 · filed 1 September 2026
- ▲ bought on the open market 78,239 shares of MAIA BiotechnologySEC Form 41 September 2026Common Stock · traded 27 August 2026 · filed 1 September 2026
- ▲ bought on the open market 46,620 shares of MAIA BiotechnologySEC Form 41 September 2026Common Stock · traded 28 August 2026 · filed 1 September 2026
- ▲ bought on the open market 1,794 shares of MAIA BiotechnologySEC Form 426 August 2026Common Stock · traded 24 August 2026 · filed 26 August 2026
- ▲ bought on the open market 11,899 shares of MAIA BiotechnologySEC Form 424 August 2026Common Stock · traded 20 August 2026 · filed 24 August 2026
- was granted 26,355 shares of MAIA Biotechnology (a derivative holding)SEC Form 42 July 2026Stock Options · traded 30 June 2026 · filed 2 July 2026
- was granted 27,258 shares of MAIA Biotechnology (a derivative holding)SEC Form 42 April 2026Stock Options · traded 31 March 2026 · filed 2 April 2026
- was granted 24,060 shares of MAIA Biotechnology (a derivative holding)SEC Form 45 January 2026Options · traded 31 December 2025 · filed 5 January 2026
- was granted 24,060 shares of MAIA Biotechnology (a derivative holding)SEC Form 45 January 2026Options · traded 31 December 2025 · filed 5 January 2026
- was granted 20,459 shares of MAIA Biotechnology (a derivative holding)SEC Form 46 October 2025Stock Options · traded 2 October 2025 · filed 6 October 2025
- was granted 20,380 shares of MAIA Biotechnology (a derivative holding)SEC Form 42 July 2025Stock Options · traded 30 June 2025 · filed 2 July 2025
- ▲ bought on the open market 20,000 shares of MAIA Biotechnology (a derivative holding)SEC Form 412 May 2025Warrants · traded 8 May 2025 · filed 12 May 2025
- ▲ bought on the open market 20,000 shares of MAIA BiotechnologySEC Form 412 May 2025Common Stock · traded 8 May 2025 · filed 12 May 2025
- was granted 20,291 shares of MAIA Biotechnology (a derivative holding)SEC Form 48 April 2025Stock Options · traded 4 April 2025 · filed 8 April 2025
- ▲ bought on the open market 73,333 shares of MAIA Biotechnology (a derivative holding)SEC Form 45 March 2025Warrants · traded 24 February 2025 · filed 5 March 2025
- ▲ bought on the open market 73,333 shares of MAIA BiotechnologySEC Form 45 March 2025Common Stock · traded 24 February 2025 · filed 5 March 2025
- ▲ bought on the open market 33,333 shares of MAIA Biotechnology (a derivative holding)SEC Form 45 March 2025Warrants · traded 3 March 2025 · filed 5 March 2025
- ▲ bought on the open market 33,333 shares of MAIA BiotechnologySEC Form 45 March 2025Common Stock · traded 3 March 2025 · filed 5 March 2025
- ▲ bought on the open market 73,333 shares of MAIA Biotechnology (a derivative holding)SEC Form 425 February 2025Warrants · traded 24 February 2025 · filed 25 February 2025
- ▲ bought on the open market 73,333 shares of MAIA BiotechnologySEC Form 425 February 2025Common Stock · traded 24 February 2025 · filed 25 February 2025
- was granted 10,225 shares of MAIA Biotechnology (a derivative holding)SEC Form 43 January 2025Stock Options · traded 31 December 2024 · filed 3 January 2025
- ▲ bought on the open market 53,418 shares of MAIA Biotechnology (a derivative holding)SEC Form 413 December 2024Warrants · traded 13 December 2024 · filed 13 December 2024
- ▲ bought on the open market 53,418 shares of MAIA BiotechnologySEC Form 413 December 2024Common Stock · traded 13 December 2024 · filed 13 December 2024
- ▲ bought on the open market 88,534 shares of MAIA Biotechnology (a derivative holding)SEC Form 44 November 2024Warrants · traded 1 November 2024 · filed 4 November 2024
- ▲ bought on the open market 88,534 shares of MAIA BiotechnologySEC Form 44 November 2024Common Stock · traded 1 November 2024 · filed 4 November 2024
- was granted 7,232 shares of MAIA Biotechnology (a derivative holding)SEC Form 42 October 2024Stock Options · traded 30 September 2024 · filed 2 October 2024
- was granted 5,728 shares of MAIA Biotechnology (a derivative holding)SEC Form 42 July 2024Stock Options · traded 30 June 2024 · filed 2 July 2024
- was granted 9,193 shares of MAIA Biotechnology (a derivative holding)SEC Form 42 April 2024Stock Options · traded 31 March 2024 · filed 2 April 2024
- ▲ bought on the open market 6,928 shares of MAIA Biotechnology (a derivative holding)SEC Form 415 March 2024Warrants · traded 14 March 2024 · filed 15 March 2024
- ▲ bought on the open market 6,928 shares of MAIA BiotechnologySEC Form 415 March 2024Common Stock · traded 14 March 2024 · filed 15 March 2024
- was granted 15,418 shares of MAIA Biotechnology (a derivative holding)SEC Form 43 January 2024Stock Options · traded 31 December 2023 · filed 3 January 2024
- was granted 8,378 shares of MAIA Biotechnology (a derivative holding)SEC Form 43 October 2023Stock Options · traded 30 September 2023 · filed 3 October 2023
- was granted 8,910 shares of MAIA Biotechnology (a derivative holding)SEC Form 45 July 2023Stock Options · traded 30 June 2023 · filed 5 July 2023
- ▲ bought on the open market 1,200 shares of MAIA BiotechnologySEC Form 422 May 2023Common Stock · traded 18 May 2023 · filed 22 May 2023
- ▲ bought on the open market 8,500 shares of MAIA BiotechnologySEC Form 428 April 2023Common Stock · traded 27 April 2023 · filed 28 April 2023
- ▲ bought on the open market 1,263 shares of MAIA BiotechnologySEC Form 419 April 2023Common Stock · traded 18 April 2023 · filed 19 April 2023
- was granted 5,675 shares of MAIA Biotechnology (a derivative holding)SEC Form 44 April 2023Stock Options · traded 31 March 2023 · filed 4 April 2023
- ▲ bought on the open market 1,333 shares of MAIA BiotechnologySEC Form 420 March 2023Common Stock · traded 16 March 2023 · filed 20 March 2023
- ▲ bought on the open market 1,057 shares of MAIA BiotechnologySEC Form 413 March 2023Common Stock · traded 9 March 2023 · filed 13 March 2023
- ▲ bought on the open market 443 shares of MAIA BiotechnologySEC Form 413 March 2023Common Stock · traded 10 March 2023 · filed 13 March 2023
- ▲ bought on the open market 481 shares of MAIA BiotechnologySEC Form 48 March 2023Common Stock · traded 6 March 2023 · filed 8 March 2023
- ▲ bought on the open market 871 shares of MAIA BiotechnologySEC Form 48 March 2023Common Stock · traded 7 March 2023 · filed 8 March 2023
- ▲ bought on the open market 10 shares of MAIA BiotechnologySEC Form 421 February 2023Common Stock · traded 16 February 2023 · filed 21 February 2023
- ▲ bought on the open market 50 shares of MAIA BiotechnologySEC Form 421 February 2023Common Stock · traded 17 February 2023 · filed 21 February 2023
- was granted 3,045 shares of MAIA Biotechnology (a derivative holding)SEC Form 44 January 2023Stock Options · traded 30 December 2022 · filed 4 January 2023
- ▲ bought on the open market 8,799 shares of MAIA BiotechnologySEC Form 413 September 2022Common Stock · traded 13 September 2022 · filed 13 September 2022
- ▲ bought on the open market 283 shares of MAIA BiotechnologySEC Form 41 September 2022Common Stock · traded 30 August 2022 · filed 1 September 2022
- ▲ bought on the open market 9,000 shares of MAIA BiotechnologySEC Form 42 August 2022Common Stock · traded 28 July 2022 · filed 2 August 2022
- ▲ bought on the open market 20,000 shares of MAIA BiotechnologySEC Form 42 August 2022Common Stock · traded 1 August 2022 · filed 2 August 2022
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.