TIMOTHY A SPRINGER
CIK 1055624 · last filed 2026-06-10
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$422.20M
Companies
5
Total Filings
77
Lifetime Open-Market Net
$246.95M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| TECX | Director | 5,724,306 | $32.71 | $187.24M | $62.37M | 7 | 2026-06-10 |
| RNAC | Director | 9,302,798 | $8.76 | $81.49M | $16.68M | 18 | 2026-01-06 |
| Morphic Holding, Inc. (MORF) Delisted | Director | 4,650,925 | $56.99 | $265.06M | $75.55M | 15 | 2024-06-05 |
| Cartesian Therapeutics, Inc. (SELB) Delisted | Director | 37,162,115 | $0.88 | $32.75M | $91.35M | 29 | 2023-01-04 |
| SRRK | Director | 2,957,422 | $51.89 | $153.46M | $1000.0K | 6 | 2019-12-12 |
Recent Filings · Page 6 of 8
77 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2020-10-08 | Cartesian Therapeutics, Inc. (SELB) Delisted | Buy (P) | +3,185,394 | $5.45M | EDGAR |
| 2020-06-23 | Cartesian Therapeutics, Inc. (SELB) Delisted | Grant (A) | — | $0 | EDGAR |
| 2020-06-19 | Morphic Holding, Inc. (MORF) Delisted | Grant (A) | — | $0 | EDGAR |
| 2019-12-26 | Cartesian Therapeutics, Inc. (SELB) Delisted | Grant (A) | +3,940,887 | $5.75M | EDGAR |
| 2019-12-16 | Cartesian Therapeutics, Inc. (SELB) Delisted | Other (J) | +1,237,028 | $0 | EDGAR |
| 2019-12-12 | SRRK | Gift (G) | −296,000 | $0 | EDGAR |
| 2019-12-09 | Morphic Holding, Inc. (MORF) Delisted | Grant (A) | — | $0 | EDGAR |
| 2019-09-16 | SRRK | — | — | $0 | EDGAR |
| 2019-09-05 | Cartesian Therapeutics, Inc. (SELB) Delisted | Other (J) | −1,237,028 | $0 | EDGAR |
| 2019-09-05 | SRRK | Other (J) | −1,237,028 | $0 | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.