Niedzwiecki Daniel — SEC Form 4 filings
SEC reporting owner CIK 1861113. 14 Form 4 filings on record with FilingPulse; latest filed 2026-04-21.
Transaction summary — filings shown
Covers all 14 filings on record, filed 2024-03-05 to 2026-04-21. 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): 4 legs across 4 filings — 27,373 shares, $2,222,228 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 16.
- Largest priced transaction: sale of 12,873 shares @ $79.86 ($1,028,038) in Lantheus Holdings, Inc., filed 2024-06-03.
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 |
|---|---|---|---|---|---|
| Lantheus Holdings, Inc. (LNTH) | See Remarks | 14 | — | 4 legs · 27,373 sh · $2,222,228 | 16 |
Form 4 filings — Niedzwiecki Daniel
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-04-21 | 4 | Lantheus Holdings, Inc. (LNTH) | Tax withholding (F): 1,911 @ $83.82 | EDGAR |
| 2026-03-09 | 4 | Lantheus Holdings, Inc. (LNTH) | Grant/award (A): 36,692 @ $0 · Tax withholding (F): 1,283 @ $76.31 | EDGAR |
| 2026-03-04 | 4 | Lantheus Holdings, Inc. (LNTH) | Grant/award (A): 5,169 @ $0 · Tax withholding (F): 8,259 @ $76.30 | EDGAR |
| 2025-06-17 | 4 | Lantheus Holdings, Inc. (LNTH) | Sale (S): 6,000 @ $78.74 | EDGAR |
| 2025-06-09 | 4 | Lantheus Holdings, Inc. (LNTH) | Sale (S): 6,000 @ $79.65 | EDGAR |
| 2025-04-21 | 4 | Lantheus Holdings, Inc. (LNTH) | Tax withholding (F): 178 @ $101.32 | EDGAR |
| 2025-03-07 | 4 | Lantheus Holdings, Inc. (LNTH) | Grant/award (A): 23,884 @ $0 · Grant/award (A): 13,927 (derivative) @ $0 | EDGAR |
| 2025-03-05 | 4 | Lantheus Holdings, Inc. (LNTH) | Grant/award (A): 10,514 @ $0 · Tax withholding (F): 12,907 @ $94.86 | EDGAR |
| 2024-08-16 | 4 | Lantheus Holdings, Inc. (LNTH) | Sale (S): 2,500 @ $97.54 | EDGAR |
| 2024-06-03 | 4 | Lantheus Holdings, Inc. (LNTH) | Sale (S): 12,873 @ $79.86 | EDGAR |
| 2024-05-21 | 4 | Lantheus Holdings, Inc. (LNTH) | Tax withholding (F): 1,466 @ $79.67 | EDGAR |
| 2024-04-26 | 4 | Lantheus Holdings, Inc. (LNTH) | Tax withholding (F): 177 @ $61.48 | EDGAR |
| 2024-03-07 | 4 | Lantheus Holdings, Inc. (LNTH) | Tax withholding (F): 8,457 @ $65.36 | EDGAR |
| 2024-03-05 | 4 | Lantheus Holdings, Inc. (LNTH) | Grant/award (A): 30,456 @ $0 · Grant/award (A): 6,466 @ $0 · Grant/award (A): 18,043 (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.
Need this as JSON?
GET https://api.filingpulse.io/v1/insider-trades?owner_cik=1861113 returns every filing on this page — normalized, with footnotes and derivative legs — and webhooks push new filings to you in seconds. API docs →