Karin L Walker
CIK 1559422 · Chief Accounting Officer · last filed 2026-03-05
Karin L Walker is a Chief Accounting Officer who has filed 51 SEC Form 4 insider transactions across 3 companies since 2012. The most recent filing, for PRTA, was dated Mar 5, 2026. Across all open-market trades the lifetime net is −$9.9M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $206.2K across reported positions.
"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.
$206.2K
3
51
-$9.94M
Holdings By Company
| 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
51 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-03-05 | PRTA | Grant (A) | — | $0 | EDGAR |
| 2025-07-30 | PRTA | Grant (A) | +25,000 | $0 | EDGAR |
| 2025-03-07 | PRTA | Grant (A) | — | $0 | EDGAR |
| 2024-02-29 | PRTA | Grant (A) | — | $0 | EDGAR |
| 2024-01-24 | PRTA | Mixed | — | -$102.3K | EDGAR |
| 2023-12-20 | PRTA | Mixed | — | -$118.3K | EDGAR |
| 2023-11-30 | PRTA | Mixed | — | -$102.3K | EDGAR |
| 2023-10-25 | PRTA | Mixed | — | -$137.5K | EDGAR |
| 2023-09-19 | PRTA | Mixed | — | -$186.6K | EDGAR |
| 2023-08-18 | PRTA | Mixed | — | -$210.7K | EDGAR |