Prange Karen
Director · ATRC, OM, EMBC, NVRO
As of 2026-09-16, Prange Karen has 11 Form 4 transactions on record across 4 companies — 6 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Reconstructed holdings
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-08-05 | ATRC | Sale | 3,564 @ $38.80 | $138K | −13.5% of holding | 22,809 | Form 4 |
| 2026-05-20 | ATRC | Sale | 3,000 @ $28.65 | $86K | −10.2% of holding | 26,373 | Form 4 |
| 2025-03-05 | ATRC | Sale | 6,100 @ $38.12 | $233K | −25.5% of holding | 17,828 | Form 4 |
8 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-06-04 | OM | Award / grant | 10,667 | 29,334 | Form 4 |
| 2026-05-18 | ATRC | Award / grant | 6,144 | 29,373 | Form 4 |
| 2026-02-11 | EMBC | Award / grant | 22,841 | 64,581 | Form 4 |
| 2026-01-09 | OM | Award / grant | 18,667 | 18,667 | Form 4 |
| 2025-05-19 | ATRC | Award / grant | 5,401 | 23,229 | Form 4 |
| 2025-04-03 | NVRO | Disposition | 33,948 | 0 | Form 4 |
| 2025-04-03 | NVRO | Disposition | 33,948 | 0 | Form 4 |
| 2025-02-12 | EMBC | Award / grant | 13,839 | 39,743 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.