Karin L Walker
CIK 1559422 · Chief Accounting Officer · last filed 2026-03-05
"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
$206.2K
Companies
3
Total Filings
51
Lifetime Open-Market Net
-$9.94M
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 |
|---|---|---|---|---|---|---|---|
| PRTA | Chief Accounting Officer | 25,000 | $8.25 | $206.2K | -$9.94M | 46 | 2026-03-05 |
| Bio Green Med Solution, Inc. (CYCCP) Delisted | Director | 40,602 | $5.05 | $205.0K | $0 | 4 | 2023-07-03 |
| AFFYMAX INC (AFFY) Delisted | VP, Finance & CAO | — | — | — | $0 | 1 | 2012-10-03 |
Recent Filings · Page 3 of 6
51 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2022-06-16 | Bio Green Med Solution, Inc. (CYCCP) Delisted | Grant (A) | +15,822 | $0 | EDGAR |
| 2022-02-25 | PRTA | Grant (A) | — | $0 | EDGAR |
| 2021-11-26 | PRTA | Mixed | — | -$193.6K | EDGAR |
| 2021-10-22 | PRTA | Mixed | — | -$995.6K | EDGAR |
| 2021-06-17 | Bio Green Med Solution, Inc. (CYCCP) Delisted | Grant (A) | +3,561 | $0 | EDGAR |
| 2021-02-26 | PRTA | Grant (A) | — | $0 | EDGAR |
| 2021-02-17 | PRTA | Mixed | — | $0 | EDGAR |
| 2020-11-12 | Bio Green Med Solution, Inc. (CYCCP) Delisted | Grant (A) | — | $0 | EDGAR |
| 2020-02-27 | PRTA | Grant (A) | — | $0 | EDGAR |
| 2019-03-01 | PRTA | Grant (A) | — | $0 | EDGAR |
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.