Insider · CIK 0001498428
John Cox
Files at: DYN, RGEN, BIVV, BIIB. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 8, 2026 SForm 4 → | Sep 8, 4:13 pm EDT | Dyne Therapeutics, Inc.DYN | 5,658 | $18.88 | $106,823 | 357,507 | −1.56% | 10b5-1 |
| Aug 13, 2026 SForm 4 → | Aug 17, 4:07 pm EDT | Dyne Therapeutics, Inc.DYN | 4,986 | $26.28 | $131,032 | 363,165 | −1.35% | 10b5-1 |
| Jun 16, 2026 SForm 4 → | Jun 17, 4:07 pm EDT | Dyne Therapeutics, Inc.DYN | 2,683 | $18.33 | $49,179 | 368,151 | −0.72% | 10b5-1 |
| May 16, 2018 AForm 4 → | May 17, 4:43 pm EDT | REPLIGEN CORPRGEN | 1,486 | — | — | 6,313 | — | plan? |
| Mar 8, 2018 DForm 4 → | Mar 8, 11:47 am EST | Bioverativ Inc.BIVV | 185,094 | — | — | 0 | — | plan? |
| Feb 22, 2018 FForm 4 → | Feb 26, 5:11 pm EST | Bioverativ Inc.BIVV | 19,767 | $104.43 | $2,064,247 | 185,094 | — | plan? |
| Feb 14, 2018 FMForm 4 → | Feb 15, 5:04 pm EST | Bioverativ Inc.BIVV | 35,158 | $103.52 | $1,119,983 | 204,861 | — | plan? |
| Feb 11, 2018 FMForm 4 → | Feb 13, 5:01 pm EST | Bioverativ Inc.BIVV | 26,053 | $37.07 | $965,771 | 191,341 | — | plan? |
| May 18, 2017 AForm 4 → | May 22, 5:01 pm EDT | REPLIGEN CORPRGEN | 1,206 | — | — | 4,827 | — | plan? |
| Mar 31, 2017 FForm 4 → | Apr 3, 4:16 pm EDT | Bioverativ Inc.BIVV | 8,416 | $54.46 | $458,335 | 180,632 | — | plan? |
| Feb 28, 2017 AFForm 4 → | Mar 2, 4:08 pm EST | Bioverativ Inc.BIVV | 249,610 | $46.09 | $1,748,144 | 189,048 | — | plan? |
| May 11, 2016 AForm 4 → | May 13, 3:39 pm EDT | REPLIGEN CORPRGEN | 1,763 | — | — | 3,621 | — | plan? |
| Apr 1, 2016 AForm 4 → | Apr 5, 5:04 pm EDT | BIOGEN INC.BIIB | 8,444 | — | — | 39,045 | — | plan? |
| Feb 23, 2016 FMForm 4 → | Feb 25, 5:04 pm EST | BIOGEN INC.BIIB | 1,192 | $258.99 | $98,934 | 30,516 | — | plan? |
| Feb 12, 2016 FMForm 4 → | Feb 17, 6:01 pm EST | BIOGEN INC.BIIB | 4,850 | $247.22 | $383,685 | 30,088 | — | plan? |
| Feb 8, 2016 FMForm 4 → | Feb 9, 4:51 pm EST | BIOGEN INC.BIIB | 5,350 | $250.77 | $332,019 | 28,342 | — | plan? |
| May 21, 2015 AForm 4 → | May 26, 6:27 pm EDT | REPLIGEN CORPRGEN | 1,858 | — | — | 1,858 | — | plan? |
| Mar 25, 2015 SForm 4 → | Mar 26, 4:31 pm EDT | BIOGEN INC.BIIB | 12,010 | $449.06 | $5,393,211 | 25,567 | −32.0% | plan? |
| Mar 25, 2015 MForm 4 → | Mar 26, 4:31 pm EDT | BIOGEN INC.BIIB | 5,066 | $65.85 | $333,571 | 37,577 | — | plan? |
| Feb 12, 2015 FMForm 4 → | Feb 17, 8:40 pm EST | BIOGEN IDEC INC.BIIB | 5,499 | $392.11 | $690,506 | 32,511 | — | plan? |
| Feb 8, 2015 FMForm 4 → | Feb 10, 5:07 pm EST | BIOGEN IDEC INC.BIIB | 12,461 | $398.98 | $1,494,979 | 30,534 | — | plan? |