Peter Kolchinsky files SEC Form 4 disclosures for SANGAMO BIOSCIENCES INC. They have made 67 open-market trades across 37 companies since 2008, most recently 2025-12-12.
CIK 0001384859
50 open-market purchases totalling $1.2B since 2008, against 17 sales. Across 50 scored buys the stock is down 0.3% at ninety days, and 4.4 points behind the S&P over the same stretch.
50 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 48% | 32% | 34% |
| Avg Move | -2.4% | +0.9% | -0.3% |
| Alpha | -1.4% | -0.3% | -4.4% |
| Scored | 50 | 50 | 50 |
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 91% | 64% | 82% |
| Avg Move | -17.1% | -7.2% | -4.7% |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CLYM | BUY | 2025-12-11 | 2025-12-15 | $2.40 | $1.5M | +36.8% | +9.8% | +97.1% |
| SION | SELL | 2025-11-20 | 2025-11-24 | $39.58 | $1.5M | -8.3% | +0.2% | -17.8% |
| VOR | SELL | 2025-10-28 | 2025-10-30 | $25.90 | $20.7M | -61.0% | -69.5% | -45.5% |
| CDTX | BUY | 2025-06-26 | 2025-06-30 | $44.00 | $100.0M | +4.2% | +27.4% | +96.4% |
| TYRA | BUY | 2025-06-04 | 2025-06-06 | $9.70 | $23.5M | -17.0% | -16.0% | +6.1% |
| ETNB | BUY | 2025-01-30 | 2025-02-03 | $8.75 | $100.0M | +11.6% | -10.1% | -10.4% |
| JANX | BUY | 2024-10-18 | 2024-10-22 | $44.75 | $53.7M | +1.5% | -13.2% | -23.7% |
| ARTV | BUY | 2024-07-22 | 2024-07-24 | $12.00 | $100.0M | -8.4% | -17.5% | -6.8% |
| ELYM | BUY | 2024-06-27 | 2024-07-01 | $3.84 | $95.8M | +0.4% | +15.3% | -29.2% |
| BOLD | BUY | 2024-04-02 | 2024-04-04 | $16.00 | $5.0M | -20.8% | -26.5% | -68.2% |
| ETNB | BUY | 2024-03-04 | 2024-03-06 | $15.35 | $20.7M | -5.4% | -19.2% | -37.7% |
| PEPG | BUY | 2024-02-09 | 2024-02-13 | $10.64 | $54.4M | +2.8% | -1.6% | -5.9% |
| WVE | BUY | 2023-12-11 | 2023-12-13 | $5.00 | $5.0M | +3.5% | +3.3% | +37.6% |
| FULC | BUY | 2022-12-27 | 2022-12-29 | $5.99 | $24K | +82.0% | +77.6% | -56.5% |
| FULC | BUY | 2022-12-19 | 2022-12-21 | $5.90 | $1.2M | +30.0% | +98.3% | -41.9% |
| DICE | BUY | 2022-10-17 | 2022-10-19 | $36.50 | $59.9M | +1.8% | -5.6% | -15.1% |
| IMRA | BUY | 2022-10-17 | 2022-10-19 | $3.68 | $3.7M | +8.6% | +12.2% | +2.7% |
| KALA | SELL | 2022-05-26 | 2022-05-26 | $0.36 | $724K | +21.2% | +5.7% | -7.9% |
| PEPG | BUY | 2022-05-10 | 2022-05-12 | $12.00 | $38.8M | -27.9% | -15.7% | -8.0% |
| ANTX | BUY | 2022-03-29 | 2022-03-31 | $15.00 | $25.0M | -9.0% | +8.9% | -48.6% |
| DICE | BUY | 2021-09-17 | 2021-09-20 | $17.00 | $23.8M | -5.3% | -9.2% | -33.0% |
| CTKB | BUY | 2021-07-27 | 2021-07-29 | $17.00 | $50.1M | +21.2% | -9.0% | +5.3% |
| SLDB | BUY | 2021-03-19 | 2021-03-23 | $5.75 | $25.4M | -9.7% | -18.5% | -35.8% |
| PHAT | SELL | 2021-03-11 | 2021-03-15 | $43.75 | $31.1M | -7.0% | -13.6% | -22.2% |
| PMVP | BUY | 2020-09-29 | 2020-09-29 | $18.00 | $17.1M | -9.3% | -7.9% | +37.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
| ELYM | 23,521,757 | $120.2M |
| ELVN | 2,122,465 | $79.3M |
| WVE | 19,202,009 | $60.1M |
| BSTC | 626,462 | $55.5M |
| IMRA | 2,774,398 | $40.5M |
| THOR | 1,525,235 | $38.8M |
| FULC | 9,505,925 | $34.8M |
| ACHN | 5,099,333 | $34.5M |
| DYN | 2,145,045 | $30.6M |
| CLYM | 3,081,757 | $30.3M |
| CTKB | 5,150,751 | $27.1M |
| ITOS | 2,545,510 | $25.8M |
| PEPG | 9,179,273 | $23.7M |
| PHAT | 3,115,008 | $21.6M |
| SLDB | 3,722,085 | $20.7M |
| VOR | 1,092,232 | $19.7M |
| SCPH | 3,247,005 | $18.4M |
| GTHX | 2,284,244 | $16.3M |
| KALV | 591,070 | $16.0M |
| SQNM | 4,788,466 | $11.4M |
| RACA | 1,098,318 | $11.3M |
| ACRS | 2,580,190 | $8.5M |
| ARTV | 1,048,572 | $6.1M |
| INZY | 1,403,653 | $5.6M |
| DRNA | 137,176 | $5.2M |
| BOLD | 1,587,912 | $3.7M |
| SION | 660,231 | $2.6M |
| STSA | 2,008,409 | $2.2M |
| KALA | 7,039,613 | $1.3M |
| ANTX | 299,999 | $1.0M |
| PMVP | 760,265 | $920K |
| SGMO | 3,970,562 | $702K |
| ICVX | 5,543 | $85K |
| FMTX | 2,750 | $55K |
| DSCI | 1,694,876 | — |
| JBIO | 1,287,858 | — |
| Total | $3.3B |
Shares reported on the most recent Form 4, priced at the 2025-12-15 close. 2 holdings could not be priced and are excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Scored | 11 | 11 | 11 |