Jonathan C. Fox files SEC Form 4 disclosures for Eidos Therapeutics, Inc.. They have made 24 open-market trades across 3 companies since 2015, most recently 2026-07-01.
CIK 0001655016
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
3 open-market purchases totalling $431K since 2015, against 21 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| MYOK | 240,997 | $54.2M |
| EIDX | 380,467 | $46.5M |
| EWTX | 24,833 | $924K |
| Total | $101.6M |
Shares reported on the most recent Form 4, priced at the 2026-07-01 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| EWTX | BUY | 2025-11-11 | 2025-11-13 | $18.64 | $199K | +17.3% | +16.7% | +49.4% |
| EWTX | BUY | 2023-12-26 | 2023-12-28 | $9.30 | $202K | -6.8% | +47.1% | +50.7% |
| EIDX | SELL | 2020-09-17 | 2020-09-18 | $50.16 | $579K | -3.5% | +40.8% | +127.7% |
| EIDX | SELL | 2020-09-14 | 2020-09-16 | $50.14 | $369K | +3.7% | +56.6% | +130.8% |
| EIDX | SELL | 2020-07-07 | 2020-07-09 | $50.00 | $250K | -3.3% | -12.2% | +53.1% |
| EIDX | SELL | 2020-06-03 | 2020-06-05 | $50.00 | $250K | -7.5% | -5.9% | -22.3% |
| EIDX | SELL | 2020-05-28 | 2020-06-01 | $50.00 | $250K | -3.4% | -2.0% | -11.7% |
| EIDX | SELL | 2020-04-23 | 2020-04-27 | $50.00 | $250K | -22.8% | -11.5% | -18.2% |
| EIDX | SELL | 2020-03-02 | 2020-03-04 | $51.57 | $516K | -24.3% | -22.2% | -3.8% |
| EIDX | SELL | 2020-02-13 | 2020-02-19 | $54.00 | $540K | -0.4% | -15.0% | -17.2% |
| EIDX | SELL | 2020-01-14 | 2020-01-16 | $55.01 | $903K | -6.7% | -9.0% | -14.1% |
| EIDX | SELL | 2019-12-04 | 2019-12-05 | $58.90 | $589K | +9.3% | -2.9% | -10.6% |
| EIDX | SELL | 2019-11-25 | 2019-11-27 | $56.52 | $565K | +8.1% | +5.3% | -15.2% |
| EIDX | SELL | 2019-11-21 | 2019-11-22 | $55.11 | $551K | +5.5% | +8.0% | -2.9% |
| EIDX | SELL | 2019-11-15 | 2019-11-19 | $48.65 | $730K | +2.6% | +13.4% | -5.8% |
| EIDX | SELL | 2019-10-15 | 2019-10-16 | $36.16 | $362K | +17.4% | +30.6% | +54.1% |
| EIDX | SELL | 2019-09-16 | 2019-09-18 | $45.74 | $229K | -27.1% | -26.4% | +29.0% |
| EIDX | SELL | 2019-08-15 | 2019-08-19 | $38.72 | $387K | -7.4% | +11.0% | +25.2% |
| EIDX | SELL | 2019-07-15 | 2019-07-17 | $40.04 | $601K | -14.1% | +0.8% | -7.1% |
| EIDX | SELL | 2019-05-30 | 2019-05-31 | $32.64 | $163K | -1.2% | +3.8% | +30.3% |
| EIDX | SELL | 2019-05-03 | 2019-05-06 | $25.03 | $125K | +0.6% | +12.9% | +11.5% |
| EIDX | SELL | 2019-05-01 | 2019-05-03 | $25.39 | $226K | +0.9% | +23.8% | +35.0% |
| EIDX | SELL | 2019-04-15 | 2019-04-16 | $23.11 | $116K | +6.2% | +4.9% | +57.8% |
| MYOK | BUY | 2015-11-03 | 2015-11-05 | $10.00 | $30K | -17.1% | -2.2% | -41.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.