JONATHAN S LEFF
CIK 1215242 · last filed 2026-05-20
"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
12
Total Filings
73
Lifetime Open-Market Net
$72.28M
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 |
|---|---|---|---|---|---|---|---|
| LRMR | Director | — | $3.47 | — | $0 | 7 | 2026-05-20 |
| PHGE | Director | — | $0.54 | — | $0 | 2 | 2025-04-21 |
| BiomX Inc. (PHGE.U) Delisted | Director | — | $0.90 | — | $0 | 1 | 2024-07-15 |
| PRTO | Director | — | $27.65 | — | $0 | 2 | 2018-06-12 |
| AveXis, Inc. (AVXS) Delisted | Director | — | — | — | $0 | 1 | 2016-02-12 |
| ALPINE IMMUNE SCIENCES, INC. (NVLS) Delisted | Director | — | — | — | $0 | 2 | 2015-09-15 |
| ALLOS THERAPEUTICS INC (ALTH) Delisted | Director | 26,124,430 | — | — | $19.74M | 8 | 2012-09-05 |
| INSPIRE PHARMACEUTICALS INC (ISPH) Delisted | Director | 0 | — | — | $40.00M | 6 | 2011-05-16 |
| ZYMOGENETICS INC (ZGEN) Delisted | Director | 0 | $12.01 | $0 | $9.54M | 13 | 2010-10-12 |
| NEUROGEN CORP (NRGN) Delisted | Director | 13,571,411 | — | — | $0 | 10 | 2008-07-28 |
| Altus Pharmaceuticals Inc. (ALTU) Delisted | Director | — | $10.12 | — | $0 | 3 | 2008-06-13 |
| Viracta Therapeutics, Inc. (SNSS) Delisted | Director | 4,304,075 | $18.62 | $80.14M | $3.00M | 3 | 2008-06-05 |
Recent Filings · Page 2 of 8
73 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2018-06-12 | PRTO | Grant (A) | — | $0 | EDGAR |
| 2017-08-04 | PRTO | Grant (A) | — | $0 | EDGAR |
| 2016-02-12 | AveXis, Inc. (AVXS) Delisted | Grant (A) | — | $0 | EDGAR |
| 2015-09-15 | ALPINE IMMUNE SCIENCES, INC. (NVLS) Delisted | Grant (A) | — | $0 | EDGAR |
| 2015-07-20 | ALPINE IMMUNE SCIENCES, INC. (NVLS) Delisted | Grant (A) | — | $0 | EDGAR |
| 2013-03-01 | — | Tax (F) | −7,108 | -$62.5K | |
| 2012-09-05 | ALLOS THERAPEUTICS INC (ALTH) Delisted | U | −55,000 | -$100.1K | EDGAR |
| 2012-06-06 | — | Grant (A) | +2,500 | $25.2K | |
| 2012-02-22 | — | Grant (A) | — | $0 | |
| 2012-01-10 | — | Grant (A) | — | $0 |
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.