Guerrero Ramiro — SEC Form 4 filings
SEC reporting owner CIK 1913253. 21 Form 4 filings on record with FilingPulse; latest filed 2026-09-14.
Transaction summary — filings shown
Covers all 21 filings on record, filed 2024-03-15 to 2026-09-14. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 13 legs across 11 filings — 533,957 shares, $882,630 total (shares × price as filed).
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 17.
- Largest priced transaction: purchase of 88,534 shares @ $2.51 ($222,220) in MAIA Biotechnology, Inc., filed 2024-11-04.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| MAIA Biotechnology, Inc. (MAIA) | Director | 21 | 13 legs · 533,957 sh · $882,630 | — | 17 |
Form 4 filings — Guerrero Ramiro
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-14 | 4 | MAIA Biotechnology, Inc. (MAIA) | Purchase (P): 37,595 @ $1.32 | EDGAR |
| 2026-09-01 | 4 | MAIA Biotechnology, Inc. (MAIA) | Purchase (P): 8,931 @ $1.39 · Purchase (P): 78,239 @ $1.39 · Purchase (P): 46,620 @ $1.35 | EDGAR |
| 2026-08-26 | 4 | MAIA Biotechnology, Inc. (MAIA) | Purchase (P): 1,794 @ $1.33 | EDGAR |
| 2026-08-24 | 4 | MAIA Biotechnology, Inc. (MAIA) | Purchase (P): 11,899 @ $1.37 | EDGAR |
| 2026-07-02 | 4 | MAIA Biotechnology, Inc. (MAIA) | Grant/award (A): 26,355 (derivative) @ $0 | EDGAR |
| 2026-04-02 | 4 | MAIA Biotechnology, Inc. (MAIA) | Grant/award (A): 27,258 (derivative) @ $0 | EDGAR |
| 2026-01-05 | 4 | MAIA Biotechnology, Inc. (MAIA) | Grant/award (A): 24,060 (derivative) @ $0 | EDGAR |
| 2025-10-06 | 4 | MAIA Biotechnology, Inc. (MAIA) | Grant/award (A): 20,459 (derivative) @ $0 | EDGAR |
| 2025-07-02 | 4 | MAIA Biotechnology, Inc. (MAIA) | Grant/award (A): 20,380 (derivative) @ $0 | EDGAR |
| 2025-05-12 | 4 | MAIA Biotechnology, Inc. (MAIA) | Purchase (P): 20,000 @ $1.50 · Purchase (P): 20,000 (derivative) @ $2.05 | EDGAR |
| 2025-04-08 | 4 | MAIA Biotechnology, Inc. (MAIA) | Grant/award (A): 20,291 (derivative) @ $0 | EDGAR |
| 2025-03-05 | 4/A | MAIA Biotechnology, Inc. (MAIA) | Purchase (P): 73,333 @ $1.50 · Purchase (P): 73,333 (derivative) @ $1.87 | EDGAR |
| 2025-03-05 | 4 | MAIA Biotechnology, Inc. (MAIA) | Purchase (P): 33,333 @ $1.50 · Purchase (P): 33,333 (derivative) @ $1.85 | EDGAR |
| 2025-02-25 | 4 | MAIA Biotechnology, Inc. (MAIA) | Purchase (P): 73,333 @ $1.50 · Purchase (P): 73,333 (derivative) @ $1.87 | EDGAR |
| 2025-01-03 | 4 | MAIA Biotechnology, Inc. (MAIA) | Grant/award (A): 10,225 (derivative) @ $0 | EDGAR |
| 2024-12-13 | 4 | MAIA Biotechnology, Inc. (MAIA) | Purchase (P): 53,418 @ $1.87 · Purchase (P): 53,418 (derivative) @ $2.08 | EDGAR |
| 2024-11-04 | 4 | MAIA Biotechnology, Inc. (MAIA) | Purchase (P): 88,534 @ $2.51 · Purchase (P): 88,534 (derivative) @ $2.26 | EDGAR |
| 2024-10-02 | 4 | MAIA Biotechnology, Inc. (MAIA) | Grant/award (A): 7,232 (derivative) @ $0 | EDGAR |
| 2024-07-02 | 4 | MAIA Biotechnology, Inc. (MAIA) | Grant/award (A): 5,728 (derivative) @ $0 | EDGAR |
| 2024-04-02 | 4 | MAIA Biotechnology, Inc. (MAIA) | Grant/award (A): 9,193 (derivative) @ $0 | EDGAR |
| 2024-03-15 | 4 | MAIA Biotechnology, Inc. (MAIA) | Purchase (P): 6,928 @ $1.17 · Purchase (P): 6,928 (derivative) @ $1.30 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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