Cloonan Michael — SEC Form 4 filings
SEC reporting owner CIK 1704336. 11 Form 4 filings on record with FilingPulse; latest filed 2026-09-18.
Transaction summary — filings shown
Covers all 11 filings on record, filed 2024-06-24 to 2026-09-18. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 12 legs across 5 filings — 200,000 shares, $6,327,622 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 33.
- Largest priced transaction: sale of 33,532 shares @ $37.31 ($1,251,079) in Sionna Therapeutics, Inc., filed 2025-10-22.
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 |
|---|---|---|---|---|---|
| Sionna Therapeutics, Inc. (SION) | President & CEO, Director | 8 | — | 12 legs · 200,000 sh · $6,327,622 | 30 |
| bluebird bio, Inc. (BLUE) | Director | 3 | — | — | 3 |
Form 4 filings — Cloonan Michael
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-18 | 4 | Sionna Therapeutics, Inc. (SION) | Grant/award (A): 109,025 @ $0 · Grant/award (A): 109,025 @ $0 · Grant/award (A): 436,100 (derivative) @ $0 · Disposition to issuer (D): 436,100 (derivative) @ $0 | EDGAR |
| 2026-01-06 | 4 | Sionna Therapeutics, Inc. (SION) | Grant/award (A): 436,100 (derivative) @ $0 | EDGAR |
| 2025-10-22 | 4 | Sionna Therapeutics, Inc. (SION) | Option exercise (M): 13,324 @ $6.11 · Sale (S): 13,324 @ $34.44 · Option exercise (M): 30,049 @ $6.11 · Sale (S): 30,049 @ $35.63 · Option exercise (M): 22,895 @ $6.11 · Sale (S): 22,895 @ $36.60 · +6 more | EDGAR |
| 2025-10-17 | 4 | Sionna Therapeutics, Inc. (SION) | Option exercise (M): 14,775 @ $6.11 · Sale (S): 14,775 @ $31.11 · Option exercise (M): 10,225 @ $6.11 · Sale (S): 10,225 @ $31.46 · Option exercise (M): 200 @ $6.11 · Sale (S): 200 @ $34 · +3 more | EDGAR |
| 2025-09-30 | 4 | Sionna Therapeutics, Inc. (SION) | Option exercise (M): 17,207 @ $6.11 · Sale (S): 17,207 @ $28.85 · Option exercise (M): 7,793 @ $6.11 · Sale (S): 7,793 @ $29.70 · Option exercise (M): 17,207 (derivative) @ $0 · Option exercise (M): 7,793 (derivative) @ $0 | EDGAR |
| 2025-08-28 | 4 | Sionna Therapeutics, Inc. (SION) | Option exercise (M): 17,574 @ $6.11 · Sale (S): 17,574 @ $24.96 · Option exercise (M): 7,426 @ $6.11 · Sale (S): 7,426 @ $25.01 · Option exercise (M): 17,574 (derivative) @ $0 · Option exercise (M): 7,426 (derivative) @ $0 | EDGAR |
| 2025-08-21 | 4 | Sionna Therapeutics, Inc. (SION) | Option exercise (M): 25,000 @ $6.11 · Sale (S): 25,000 @ $22.75 · Option exercise (M): 25,000 (derivative) @ $0 | EDGAR |
| 2025-06-03 | 4 | bluebird bio, Inc. (BLUE) | Disposition to issuer (D): 1,867 | EDGAR |
| 2025-02-10 | 4 | Sionna Therapeutics, Inc. (SION) | Grant/award (A): 450,252 (derivative) @ $0 | EDGAR |
| 2024-10-02 | 4 | bluebird bio, Inc. (BLUE) | Grant/award (A): 37,350 @ $0 | EDGAR |
| 2024-06-24 | 4 | bluebird bio, Inc. (BLUE) | Grant/award (A): 74,775 (derivative) @ $0 | 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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