Arthur Tzianabos is CEO & President at Homology Medicines, Inc. (FIXX). They have made 15 open-market trades across 4 companies since 2013, most recently 2026-03-10.
CIK 0001586226
3 open-market purchases totalling $22K since 2013, against 12 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| FIXX | 128,778 | $2.2M |
| STOK | 35,694 | $931K |
| OVAS | 25,400 | $264K |
| QTTB | 7,983 | $71K |
| BIND | 15,000 | — |
| Total | $3.4M |
Shares reported on the most recent Form 4, priced at the 2026-03-12 close. 1 holding could not be priced and is excluded from the total.
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 |
|---|---|---|---|---|---|---|---|---|
| STOK | SELL | 2026-03-10 | 2026-03-12 | $40.00 | $174K | -12.6% | -4.8% | -22.7% |
| QTTB | SELL | 2024-03-25 | 2024-08-14 | $24.20 | $6K | +4.8% | +23.7% | +17.1% |
| FIXX | SELL · 10b5-1 | 2024-01-09 | 2024-02-15 | $0.57 | $7K | +26.1% | +23.4% | N/A |
| FIXX | SELL · 10b5-1 | 2023-01-09 | 2023-01-11 | $1.39 | $15K | +2.5% | -11.6% | -37.2% |
| FIXX | SELL · 10b5-1 | 2022-01-05 | 2022-01-12 | $3.78 | $20K | -6.5% | +1.3% | -40.4% |
| STOK | SELL | 2021-02-19 | 2021-02-23 | $60.67 | $607K | -8.8% | -32.4% | -38.2% |
| STOK | SELL | 2020-11-23 | 2020-11-25 | $46.13 | $1.6M | +4.9% | +23.7% | +20.4% |
| FIXX | SELL | 2020-02-03 | 2020-02-05 | $16.16 | $202K | +4.1% | +15.5% | -29.6% |
| FIXX | SELL | 2020-01-02 | 2020-01-03 | $20.50 | $256K | -6.0% | -9.4% | -12.3% |
| FIXX | SELL | 2019-11-29 | 2019-12-03 | $16.15 | $404K | +13.8% | +12.8% | -6.6% |
| FIXX | SELL | 2019-10-01 | 2019-10-02 | $17.40 | $217K | -18.7% | -25.0% | +22.0% |
| FIXX | SELL | 2019-09-03 | 2019-09-05 | $18.75 | $234K | +7.4% | -22.3% | -10.5% |
| FIXX | SELL | 2019-08-01 | 2019-08-05 | $17.37 | $217K | -1.8% | +20.3% | -21.4% |
| FIXX | SELL | 2019-07-01 | 2019-07-03 | $18.98 | $237K | +10.1% | -11.9% | -8.0% |
| FIXX | SELL | 2019-06-03 | 2019-06-05 | $19.86 | $248K | -3.3% | -7.9% | -4.0% |
| OVAS | BUY | 2015-04-09 | 2015-04-09 | $28.77 | $6K | -32.7% | -2.1% | -2.1% |
| OVAS | BUY | 2015-04-08 | 2015-04-08 | $28.04 | $5K | -32.7% | -2.1% | -2.1% |
| OVAS | BUY | 2013-09-12 | 2013-09-12 | $10.32 | $10K | -32.7% | -2.1% | -2.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.