SPRINGER TIMOTHY A — SEC Form 4 filings
SEC reporting owner CIK 1055624. 27 Form 4 filings on record with FilingPulse; latest filed 2026-06-10.
Transaction summary — filings shown
Covers all 27 filings on record, filed 2024-01-04 to 2026-06-10. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 67 legs across 15 filings — 3,962,304 shares, $79,049,968 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, …): 47.
- Largest priced transaction: purchase of 660,000 shares @ $50.00 ($33,000,000) in Tectonic Therapeutic, Inc., filed 2025-02-07.
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 |
|---|---|---|---|---|---|
| Tectonic Therapeutic, Inc. (TECX) | Director, 10% owner | 8 | 17 legs · 1,781,217 sh · $62,366,821 | — | 8 |
| Cartesian Therapeutics, Inc. (RNAC) | Director, 10% owner | 17 | 50 legs · 2,181,087 sh · $16,683,148 | — | 27 |
| Morphic Holding, Inc. (MORF) | Director, 10% owner | 2 | — | — | 12 |
Form 4 filings — SPRINGER TIMOTHY A
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-06-10 | 4 | Tectonic Therapeutic, Inc. (TECX) | Grant/award (A): 10,200 (derivative) @ $0 | EDGAR |
| 2026-01-06 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Grant/award (A): 2,600 @ $0 · Grant/award (A): 7,800 (derivative) @ $0 | EDGAR |
| 2025-06-11 | 4 | Tectonic Therapeutic, Inc. (TECX) | Grant/award (A): 10,200 (derivative) @ $0 | EDGAR |
| 2025-04-11 | 4 | Tectonic Therapeutic, Inc. (TECX) | Purchase (P): 2,861 @ $14.62 · Purchase (P): 857 @ $15.23 · Purchase (P): 8,092 @ $16.73 · Purchase (P): 9,478 @ $16.31 · Purchase (P): 16,215 @ $14.62 · Purchase (P): 4,856 @ $15.23 · +2 more | EDGAR |
| 2025-04-11 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Purchase (P): 7,342 @ $9.43 · Purchase (P): 31 @ $9.95 · Purchase (P): 41,604 @ $9.43 · Purchase (P): 178 @ $9.95 · Purchase (P): 7,966 @ $10.43 · Purchase (P): 609 @ $10.92 · +4 more | EDGAR |
| 2025-04-09 | 4 | Tectonic Therapeutic, Inc. (TECX) | Purchase (P): 87,500 @ $17.10 · Purchase (P): 412,500 @ $17.10 | EDGAR |
| 2025-03-20 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Purchase (P): 14,740 @ $14.42 · Purchase (P): 20,234 @ $14.97 · Purchase (P): 54,889 @ $15.59 | EDGAR |
| 2025-02-07 | 4 | Tectonic Therapeutic, Inc. (TECX) | Purchase (P): 129,294 @ $54.14 · Purchase (P): 660,000 @ $50 | EDGAR |
| 2025-01-15 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Purchase (P): 7,962 @ $16.86 · Purchase (P): 8,983 @ $17.78 · Purchase (P): 4,022 @ $18 | EDGAR |
| 2025-01-06 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Grant/award (A): 2,600 @ $0 · Grant/award (A): 7,800 (derivative) @ $0 | EDGAR |
| 2024-12-23 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Purchase (P): 11,303 @ $17.39 · Purchase (P): 10,529 @ $18.35 · Purchase (P): 3,376 @ $18.93 · Purchase (P): 21,800 @ $18.94 · Purchase (P): 5,181 @ $19.00 | EDGAR |
| 2024-11-18 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Purchase (P): 74,157 @ $16.19 · Purchase (P): 22,242 @ $16.97 · Purchase (P): 277,246 @ $17.09 · Purchase (P): 38,114 @ $17.96 · Purchase (P): 20,181 @ $18.42 | EDGAR |
| 2024-10-24 | 4 | Tectonic Therapeutic, Inc. (TECX) | Purchase (P): 300,000 @ $33.59 | EDGAR |
| 2024-10-04 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Other (J): 1,801,314 · Purchase (P): 5,514 @ $17.38 · Other (J): 2,119,193 · Other (J): 317,879 · Purchase (P): 29,847 @ $18.25 · Purchase (P): 10,249 @ $19.01 · +10 more | EDGAR |
| 2024-09-27 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Option exercise (M): 1,636,832 · Option exercise (M): 1,636,832 · Option exercise (M): 721,361 · Option exercise (M): 721,361 · Option exercise (M): 1,307 · Option exercise (M): 1,307 | EDGAR |
| 2024-09-26 | 4 | Tectonic Therapeutic, Inc. (TECX) | Other (J): 1,240,893 @ $0 · Other (J): 1,054,759 @ $0 · Other (J): 186,134 @ $0 · Purchase (P): 24,531 @ $28.16 · Purchase (P): 18,999 @ $29.13 · Purchase (P): 4,070 @ $30.10 · +1 more | EDGAR |
| 2024-08-20 | 4 | Morphic Holding, Inc. (MORF) | Code (U): 4,608,052 · Code (U): 2,768,893 · Code (U): 42,873 · Disposition to issuer (D): 4,288 (derivative) · Disposition to issuer (D): 24,000 (derivative) · Disposition to issuer (D): 90,000 (derivative) · +5 more | EDGAR |
| 2024-08-14 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Purchase (P): 8,016 @ $12.72 | EDGAR |
| 2024-07-05 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Grant/award (A): 1,636,832 @ $20 · Grant/award (A): 721,361 @ $20 · Grant/award (A): 1,307 @ $20 | EDGAR |
| 2024-06-24 | 4 | Tectonic Therapeutic, Inc. (TECX) | Grant/award (A): 2,692,005 · Grant/award (A): 1,551,116 · Grant/award (A): 11,760 (derivative) @ $0 | EDGAR |
| 2024-06-05 | 4 | Morphic Holding, Inc. (MORF) | Grant/award (A): 23,168 (derivative) @ $0 | EDGAR |
| 2024-04-10 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Option exercise (M): 123,925.41 · Option exercise (M): 4,130,846 · Option exercise (M): 24,785.08 · Option exercise (M): 826,169 | EDGAR |
| 2024-03-28 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Purchase (P): 800 @ $0.69 · Purchase (P): 800 @ $0.65 · Purchase (P): 2,400 @ $0.66 · Purchase (P): 4,800 @ $0.66 · Purchase (P): 1,200 @ $0.65 · Purchase (P): 1,200 @ $0.61 · +4 more | EDGAR |
| 2024-03-26 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Option exercise (M): 1,970,443 @ $1.46 · Option exercise (M): 1,970,443 (derivative) @ $0 | EDGAR |
| 2024-03-20 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Purchase (P): 19,044 @ $0.60 | EDGAR |
| 2024-03-18 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Purchase (P): 648,372 @ $0.54 · Purchase (P): 537,500 @ $0.59 | EDGAR |
| 2024-01-04 | 4 | Cartesian Therapeutics, Inc. (RNAC) | Grant/award (A): 178,000 @ $0 · Grant/award (A): 228,000 (derivative) @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-04 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
Need this as JSON?
GET https://api.filingpulse.io/v1/insider-trades?owner_cik=1055624 returns every filing on this page — normalized, with footnotes and derivative legs — and webhooks push new filings to you in seconds. API docs →