Roderick De Greef
CIK 1241181 · President and CEO · last filed 2026-09-22
Roderick De Greef is a President and CEO who has filed 120 SEC Form 4 insider transactions across 4 companies since 2007. The most recent filing shows the insider had shares withheld for taxes covering $101.8K of BLFS on Sep 22, 2026. Across all open-market trades the lifetime net is −$24.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $27.2M 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.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| BLFS | President and CEO | 728,196 | $37.30 | $27.16M | -$21.97M | 83 | 2026-09-22 |
| PARETEUM Corp (TEUM) Delisted | Director | 18,078 | — | — | $30.4K | 2 | 2017-02-24 |
| PARETEUM Corp (ETAK) Delisted | Director | 176,038 | — | — | $0 | 2 | 2016-04-29 |
| ENDOLOGIX INC /DE/ (ELGX) Delisted | Director | 860 | — | — | -$2.31M | 12 | 2013-03-08 |
Recent Filings
120 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-09-22 | BLFS | Tax (F) | −2,775 | -$101.8K | EDGAR |
| 2026-06-22 | BLFS | Tax (F) | −2,775 | -$72.3K | EDGAR |
| 2026-03-23 | BLFS | Tax (F) | −11,101 | -$212.3K | EDGAR |
| 2026-02-26 | BLFS | Mixed | +354,849 | -$3.47M | EDGAR |
| 2025-11-13 | BLFS | Notice (144) | −31,165 | -$789.3K | EDGAR |
| 2025-11-13 | BLFS | Sell (S) | −100,000 | -$2.58M | EDGAR |
| 2025-11-12 | BLFS | Notice (144) | −33,418 | -$865.0K | EDGAR |
| 2025-11-12 | BLFS | Notice (144) | −35,417 | -$926.1K | EDGAR |
| 2025-10-24 | BLFS | Sell (S) | −37,795 | -$1.03M | EDGAR |
| 2025-10-22 | BLFS | Notice (144) | −37,795 | -$1.03M | EDGAR |
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.