WILLIAM JL RIEFLIN
CIK 1182471 · Executive Chairman · last filed 2026-06-12
"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
$0
Companies
5
Total Filings
54
Lifetime Open-Market Net
$275.2K
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 |
|---|---|---|---|---|---|---|---|
| LYEL | Director | — | $13.55 | — | $0 | 6 | 2026-06-12 |
| RAPT Therapeutics, Inc. (RAPT) Delisted | Director | 11,840 | $58.01 | $686.8K | $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 · Page 5 of 6
54 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2010-09-17 | XENOPORT INC (XNPT) Delisted | Mixed | +399 | $0 | EDGAR |
| 2010-05-14 | XENOPORT INC (XNPT) Delisted | Grant (A) | — | $0 | EDGAR |
| 2010-03-16 | XENOPORT INC (XNPT) Delisted | Grant (A) | — | $0 | EDGAR |
| 2010-02-26 | XENOPORT INC (XNPT) Delisted | Exer (M) | +2,917 | $0 | EDGAR |
| 2010-02-02 | XENOPORT INC (XNPT) Delisted | Exer (M) | +1,250 | $0 | EDGAR |
| 2010-01-15 | XENOPORT INC (XNPT) Delisted | Grant (A) | — | $0 | EDGAR |
| 2009-02-19 | XENOPORT INC (XNPT) Delisted | Exer (M) | +1,459 | $0 | EDGAR |
| 2009-01-30 | XENOPORT INC (XNPT) Delisted | Mixed | +1,250 | $0 | EDGAR |
| 2009-01-16 | XENOPORT INC (XNPT) Delisted | Mixed | +5,592 | $0 | EDGAR |
| 2008-11-12 | XENOPORT INC (XNPT) Delisted | Exer (M) | +18,887 | $283.3K | EDGAR |
Form 4 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.
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.
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.