WILLIAM R RINGO
CIK 1238325 · Chief Executive Officer · last filed 2025-06-09
"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
$7.39M
Companies
12
Total Filings
153
Lifetime Open-Market Net
-$4.32M
Filer Profile
Reported Address
C/O ASSEMBLY BIOSCIENCES, INC.TWO TOWER PLACE, 7TH FLOOR
SOUTH SAN FRANCISCO, CA 94080
Related Filers
INTERMUNE INC — 9 joint filings, latest 2008-07-25
PHARMACEUTICAL CO LA JOLLA — 3 joint filings, latest 2004-05-25
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses.
View filings on SEC EDGAR.
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 |
|---|---|---|---|---|---|---|---|
| ASMB | Director | 1,455 | $23.67 | $34.4K | -$510.4K | 23 | 2025-06-09 |
| Sensei Biotherapeutics, Inc. (SNSE) Delisted | Director | 1,170 | $13.85 | $16.2K | $0 | 4 | 2025-05-23 |
| FIVE PRIME THERAPEUTICS, INC. (FPRX) Delisted | Chief Executive Officer | 0 | $38.00 | $0 | -$1.78M | 14 | 2021-04-19 |
| DERM | Director | 6,000 | $6.14 | $36.8K | -$165.7K | 17 | 2019-06-14 |
| FIVE PRIME THERAPEUTICS, INC. (XLRN) Delisted | Director | 10,000 | $178.75 | $1.79M | -$374.3K | 16 | 2019-06-12 |
| SANGAMO THERAPEUTICS, INC (SGMO) Delisted | Director | 31,800 | $0.18 | $5.6K | -$1.10M | 15 | 2017-09-22 |
| Mirati Therapeutics, Inc. (MRTX) Delisted | Director | — | $58.70 | — | $0 | 4 | 2016-05-19 |
| ASSEMBLY BIOSCIENCES, INC. (VTUS) Delisted | Director | 20,465 | — | — | $0 | 1 | 2014-07-14 |
| ONYX PHARMACEUTICALS INC (ONXX) Delisted | Director | 9,837 | — | — | -$400.3K | 7 | 2013-04-01 |
| PFE | Senior Vice President | 255,139 | $28.67 | $7.31M | $0 | 37 | 2010-04-01 |
| ALLOS THERAPEUTICS INC (ALTH) Delisted | Director | 3,000 | — | — | $0 | 2 | 2007-06-21 |
| INSPIRE PHARMACEUTICALS INC (ISPH) Delisted | Director | — | — | — | $0 | 1 | 2007-06-12 |
Recent Filings · Page 11 of 16
153 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 |
|---|---|---|---|---|---|
| 2013-06-14 | SANGAMO THERAPEUTICS, INC (SGMO) Delisted | Grant (A) | — | $0 | EDGAR |
| 2013-04-01 | ONYX PHARMACEUTICALS INC (ONXX) Delisted | Grant (A) | +2,100 | $0 | EDGAR |
| 2012-11-08 | ONYX PHARMACEUTICALS INC (ONXX) Delisted | Sell (S) | −1,300 | -$97.5K | EDGAR |
| 2012-08-08 | ONYX PHARMACEUTICALS INC (ONXX) Delisted | Mixed | +4,077 | -$1.3K | EDGAR |
| 2012-07-27 | ONYX PHARMACEUTICALS INC (ONXX) Delisted | Grant (A) | +1,500 | $0 | EDGAR |
| 2012-06-25 | SANGAMO THERAPEUTICS, INC (SGMO) Delisted | Grant (A) | — | $0 | EDGAR |
| 2012-04-03 | ONYX PHARMACEUTICALS INC (ONXX) Delisted | Grant (A) | +3,000 | $0 | EDGAR |
| 2011-06-03 | SANGAMO THERAPEUTICS, INC (SGMO) Delisted | Grant (A) | — | $0 | EDGAR |
| 2011-04-04 | ONYX PHARMACEUTICALS INC (ONXX) Delisted | Grant (A) | +460 | $0 | EDGAR |
| 2011-02-07 | ONYX PHARMACEUTICALS INC (ONXX) Delisted | Grant (A) | — | $0 | 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.