WILLIAM JL RIEFLIN
CIK 1182471 · Executive Chairman · last filed 2025-05-19
WILLIAM JL RIEFLIN is an Executive Chairman who has filed 53 SEC Form 4 insider transactions across 5 companies since 2007. The most recent filing, for LYEL, was dated May 19, 2025. Across all open-market trades the lifetime net is +$275.2K, making them a net buyer over the disclosed history.
"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.
$0
5
53
$275.2K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| LYEL | Director | — | $13.50 | — | $0 | 5 | 2025-05-19 |
| RAPT Therapeutics, Inc. (RAPT) Delisted | Director | 94,722 | $58.01 | $5.49M | $258.2K | 11 | 2024-05-23 |
| NGM BIOPHARMACEUTICALS INC (NGM) Delisted | Executive Chairman | 0 | $1.54 | $0 | $0 | 6 | 2024-04-08 |
| XENOPORT INC (XNPT) Delisted | Director | 0 | — | — | $17.0K | 24 | 2016-07-06 |
| Anacor Pharmaceuticals, Inc. (ANAC) Delisted | Director | 0 | $10.19 | $0 | $0 | 7 | 2016-06-24 |
Recent Filings
53 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-05-19 | LYEL | Grant (A) | — | $0 | EDGAR |
| 2024-06-17 | LYEL | Grant (A) | — | $0 | EDGAR |
| 2024-05-23 | RAPT Therapeutics, Inc. (RAPT) Delisted | Grant (A) | — | $0 | EDGAR |
| 2024-04-08 | NGM BIOPHARMACEUTICALS INC (NGM) Delisted | Mixed | −2,774,340 | $0 | EDGAR |
| 2024-04-01 | RAPT Therapeutics, Inc. (RAPT) Delisted | Grant (A) | — | $0 | EDGAR |
| 2023-09-08 | LYEL | Grant (A) | — | $0 | EDGAR |
| 2023-06-20 | LYEL | Grant (A) | — | $0 | EDGAR |
| 2023-05-25 | RAPT Therapeutics, Inc. (RAPT) Delisted | Grant (A) | — | $0 | EDGAR |
| 2023-05-12 | NGM BIOPHARMACEUTICALS INC (NGM) Delisted | Grant (A) | — | $0 | EDGAR |
| 2023-04-10 | RAPT Therapeutics, Inc. (RAPT) Delisted | Grant (A) | — | $0 | EDGAR |