Company · CIK 0001297184 · SIC 2834 — Pharmaceutical Preparations · Nasdaq
Amphastar Pharmaceuticals, Inc. · AMPH
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 21, 2026 SForm 4 → | Sep 23, 6:02 pm EDT | William J PetersCFO, EVP & TREASURER, Director | 4,139 | $25.00 | $103,475 | 168,707 | −2.39% | 10b5-1 |
| Sep 16, 2026 SForm 4 → | Sep 17, 6:19 pm EDT | Rong ZhouSENIOR EVP, PRODUCTION CENTER | 10,000 | $23.94 | $239,404 | 169,203 | −5.58% | |
| Sep 16, 2026 MForm 4 → | Sep 17, 6:19 pm EDT | Rong ZhouSENIOR EVP, PRODUCTION CENTER | 10,000 | $13.35 | $133,500 | 179,203 | — | |
| Sep 2, 2026 SForm 4 → | Sep 3, 7:42 pm EDT | Rong ZhouSENIOR EVP, PRODUCTION CENTER | 3,187 | $23.63 | $75,306 | 169,203 | −1.85% | |
| Aug 11, 2026 SForm 4 → | Aug 12, 6:14 pm EDT | Richard K PrinsDirector | 7,973 | $20.30 | $161,852 | 29,625 | −21.2% | |
| Aug 7, 2026 SForm 4 → | Aug 11, 4:57 pm EDT | William J PetersCFO, EVP & TREASURER, Director | 8,180 | $22.48 | $183,886 | 172,846 | −4.52% | 10b5-1 |
| Aug 7, 2026 MForm 4 → | Aug 11, 4:57 pm EDT | William J PetersCFO, EVP & TREASURER, Director | 5,053 | $19.79 | $99,999 | 181,026 | — | 10b5-1 |
| Jul 9, 2026 AForm 4 → | Jul 13, 7:38 pm EDT | Anthony T PierceDirector | 7,886 | — | — | 7,886 | — | |
| Jun 1, 2026 AFForm 4 → | Jun 3, 9:20 pm EDT | Howard LeeDirector | 8,912 | $18.45 | $14,188 | 159,350 | — | |
| Jun 1, 2026 AForm 4 → | Jun 3, 8:34 pm EDT | Michael A ZasloffDirector | 8,143 | — | — | 37,667 | — | |
| Jun 1, 2026 AForm 4 → | Jun 3, 8:33 pm EDT | Diane G. GerstDirector | 8,143 | — | — | 31,899 | — | |
| Jun 1, 2026 AForm 4 → | Jun 3, 8:31 pm EDT | David Russell GaughDirector | 8,143 | — | — | 14,447 | — | |
| Jun 1, 2026 AForm 4 → | Jun 3, 8:29 pm EDT | Gayle DeflinDirector | 8,143 | — | — | 19,057 | — | |
| Aug 19, 2024 AGForm 4 → | Jun 3, 2026, 9:22 pm EDT | Richard K PrinsDirector | 9,643 | — | — | 37,598 | — | late |
| Mar 4, 2019 SForm 4 → | Mar 6, 5:20 pm EST | William J PetersCFO, SVP & Treasurer | 1,500 | $25.36 | $38,037 | 75,550 | −1.95% | plan? |
| Mar 4, 2019 MForm 4 → | Mar 6, 5:20 pm EST | William J PetersCFO, SVP & Treasurer | 1,500 | $13.35 | $20,025 | 77,050 | — | plan? |
| Mar 1, 2019 SForm 4 → | Mar 4, 8:44 pm EST | Rong ZhouEVP, Production Center | 3,200 | $25.00 | $80,000 | 52,030 | −5.79% | plan? |
| Mar 1, 2019 MForm 4 → | Mar 4, 8:44 pm EST | Rong ZhouEVP, Production Center | 3,200 | $20.26 | $64,832 | 55,230 | — | plan? |
| Mar 1, 2019 SForm 4 → | Mar 1, 8:01 pm EST | Jason B. ShandellPresident and General Counsel, Director | 7,500 | $24.99 | $187,425 | 168,318 | −4.27% | plan? |
| Mar 1, 2019 MForm 4 → | Mar 1, 8:01 pm EST | Jason B. ShandellPresident and General Counsel, Director | 7,500 | $20.26 | $151,950 | 175,818 | — | plan? |
| Feb 15, 2019 SForm 4 → | Feb 15, 8:09 pm EST | William J PetersCFO, SVP & Treasurer | 10,016 | $24.37 | $244,090 | 75,550 | −11.7% | plan? |
| Feb 15, 2019 MForm 4 → | Feb 15, 8:09 pm EST | William J PetersCFO, SVP & Treasurer | 10,016 | $13.35 | $133,714 | 85,566 | — | plan? |
| Feb 14, 2019 SForm 4 → | Feb 15, 4:56 pm EST | Jason B. ShandellPresident and General Counsel, Director | 7,519 | $23.99 | $180,381 | 168,318 | −4.28% | plan? |
| Feb 14, 2019 MForm 4 → | Feb 15, 4:56 pm EST | Jason B. ShandellPresident and General Counsel, Director | 7,519 | $15.23 | $114,514 | 175,837 | — | plan? |
| Feb 12, 2019 SForm 4 → | Feb 14, 6:30 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 8,868 | $23.86 | $211,632 | 35,883 | −19.8% | plan? |
| Feb 12, 2019 MForm 4 → | Feb 14, 6:30 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 8,868 | $14.95 | $132,577 | 40,751 | — | plan? |
| Feb 5, 2019 SForm 4 → | Feb 7, 4:05 pm EST | Rong ZhouEVP, Production Center | 4,289 | $23.00 | $98,647 | 52,030 | −7.62% | plan? amended |
| Feb 5, 2019 MForm 4 → | Feb 7, 4:05 pm EST | Rong ZhouEVP, Production Center | 3,200 | $20.26 | $64,832 | 56,319 | — | plan? amended |
| Feb 5, 2019 SForm 4 → | Feb 6, 8:12 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 11,397 | $23.18 | $264,167 | 35,883 | −24.1% | plan? |
| Feb 5, 2019 MForm 4 → | Feb 6, 8:12 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 9,817 | $10.48 | $102,882 | 47,280 | — | plan? |
| Jan 23, 2019 SForm 4 → | Jan 25, 4:11 pm EST | Jason B. ShandellPresident and General Counsel, Director | 15,497 | $22.39 | $347,019 | 168,318 | −8.43% | plan? |
| Jan 22, 2019 SForm 4 → | Jan 24, 8:47 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 7,000 | $22.52 | $157,650 | 37,463 | −15.7% | plan? |
| Jan 22, 2019 MForm 4 → | Jan 24, 8:47 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 7,000 | $10.48 | $73,360 | 41,463 | — | plan? |
| Jan 14, 2019 SForm 4 → | Jan 16, 7:10 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 3,183 | $22.15 | $70,503 | 37,463 | −7.83% | plan? |
| Jan 14, 2019 MForm 4 → | Jan 16, 7:10 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 3,183 | $10.48 | $33,358 | 40,638 | — | plan? |
| Jan 2, 2019 SForm 4 → | Jan 4, 5:04 pm EST | William J PetersCFO, SVP & Treasurer | 3,245 | $19.52 | $63,354 | 75,550 | −4.12% | plan? |
| Dec 14, 2018 SForm 4 → | Dec 17, 8:05 pm EST | Richard K PrinsDirector | 1,616 | $20.65 | $33,370 | 33,818 | −4.56% | plan? |
| Dec 14, 2018 SForm 4 → | Dec 17, 8:02 pm EST | Jack Y. Zhang +1CEO & Chief Scientific Officer, Director, 10% Owner | 43,577 | $20.48 | $892,309 | 2,072,317 | −2.06% | plan? |
| Dec 11, 2018 SForm 4 → | Dec 13, 8:08 pm EST | Jack Y. Zhang +1CEO & Chief Scientific Officer, Director, 10% Owner | 133,915 | $21.29 | $2,851,052 | 7,327,679 | −1.79% | plan? |
| Dec 11, 2018 SForm 4 → | Dec 13, 8:05 pm EST | Applied Physics & Chemistry Laboratories, Inc.10% Owner | 133,915 | $21.29 | $2,851,052 | 7,327,679 | −1.79% | plan? |
| Dec 11, 2018 SForm 4 → | Dec 12, 8:39 pm EST | Richard KooDirector | 29,278 | $21.32 | $624,075 | 241,928 | −10.8% | plan? |
| Dec 11, 2018 MForm 4 → | Dec 12, 8:39 pm EST | Richard KooDirector | 29,278 | $14.66 | $429,215 | 271,206 | — | plan? |
| Dec 10, 2018 SForm 4 → | Dec 12, 8:37 pm EST | Stephen B. ShohetDirector | 58,557 | $21.72 | $1,271,782 | 30,706 | −65.6% | plan? |
| Dec 10, 2018 MForm 4 → | Dec 12, 8:37 pm EST | Stephen B. ShohetDirector | 58,557 | $14.66 | $858,446 | 89,263 | — | plan? |
| Dec 4, 2018 SForm 4 → | Dec 7, 6:36 pm EST | Howard LeeDirector | 29,278 | $21.67 | $634,464 | 123,381 | −19.2% | plan? |
| Dec 4, 2018 MForm 4 → | Dec 7, 6:36 pm EST | Howard LeeDirector | 29,278 | $14.66 | $429,215 | 132,659 | — | plan? |
| Dec 3, 2018 SForm 4 → | Dec 6, 3:56 pm EST | Rong ZhouEVP, Production Center | 1,089 | $22.00 | $23,958 | 53,119 | −2.01% | plan? |
| Dec 3, 2018 SForm 4 → | Dec 6, 3:54 pm EST | Jason B. ShandellPresident and General Counsel, Director | 16,630 | $22.44 | $373,177 | 183,815 | −8.30% | plan? |
| Dec 3, 2018 MForm 4 → | Dec 6, 3:54 pm EST | Jason B. ShandellPresident and General Counsel, Director | 16,630 | $10.48 | $174,282 | 200,445 | — | plan? |
| Dec 3, 2018 DMForm 4 → | Dec 4, 9:01 pm EST | Floyd F. PetersenDirector | 58,556 | $18.56 | $1,086,630 | 71,151 | — | plan? |
| Dec 3, 2018 SForm 4 → | Dec 4, 9:00 pm EST | William J PetersCFO, SVP & Treasurer | 10,000 | $22.40 | $224,001 | 78,795 | −11.3% | plan? |
| Dec 3, 2018 MForm 4 → | Dec 4, 9:00 pm EST | William J PetersCFO, SVP & Treasurer | 10,000 | $11.33 | $113,300 | 88,795 | — | plan? |
| Nov 30, 2018 SForm 4 → | Dec 3, 8:08 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 13,980 | $21.50 | $300,513 | 6,369 | −68.7% | plan? |
| Nov 30, 2018 MForm 4 → | Dec 3, 8:08 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 11,500 | $20.26 | $232,990 | 48,963 | — | plan? |
| Nov 29, 2018 SForm 4 → | Nov 30, 4:15 pm EST | Richard K PrinsDirector | 5,000 | $20.50 | $102,500 | 35,434 | −12.4% | plan? |
| Nov 29, 2018 MForm 4 → | Nov 30, 4:15 pm EST | Richard K PrinsDirector | 5,000 | $14.66 | $73,300 | 40,434 | — | plan? |
| Nov 28, 2018 SForm 4 → | Nov 29, 6:12 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 1,520 | $20.49 | $31,140 | 8,849 | −14.7% | plan? |
| Nov 23, 2018 SForm 4 → | Nov 26, 8:48 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 1,299 | $20.26 | $26,315 | 37,463 | −3.35% | plan? |
| Nov 14, 2018 SForm 4 → | Nov 15, 7:23 pm EST | Michael A ZasloffDirector | 29,278 | $20.39 | $596,949 | 29,845 | −49.5% | plan? |
| Nov 14, 2018 MForm 4 → | Nov 15, 7:23 pm EST | Michael A ZasloffDirector | 29,278 | $14.66 | $429,215 | 59,123 | — | plan? |
| Nov 14, 2018 SForm 4 → | Nov 15, 7:21 pm EST | Richard K PrinsDirector | 5,000 | $20.23 | $101,167 | 35,434 | −12.4% | plan? |
| Nov 14, 2018 MForm 4 → | Nov 15, 7:21 pm EST | Richard K PrinsDirector | 5,000 | $14.66 | $73,300 | 40,434 | — | plan? |
| Nov 14, 2018 SForm 4 → | Nov 15, 7:20 pm EST | Jason B. ShandellPresident and General Counsel, Director | 16,015 | $20.41 | $326,855 | 183,490 | −8.03% | plan? |
| Nov 8, 2018 SForm 4 → | Nov 13, 5:10 pm EST | Rong ZhouEVP, Production Center | 2,173 | $20.50 | $44,549 | 53,303 | −3.92% | plan? late |
| Nov 8, 2018 SForm 4 → | Nov 13, 5:09 pm EST | William J PetersCFO, SVP & Treasurer | 38,484 | $20.74 | $797,972 | 78,152 | −33.0% | plan? late |
| Nov 8, 2018 MForm 4 → | Nov 13, 5:09 pm EST | William J PetersCFO, SVP & Treasurer | 29,800 | $11.33 | $337,634 | 91,324 | — | plan? late |
| Nov 8, 2018 SForm 4 → | Nov 13, 5:08 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 17,808 | $20.97 | $373,421 | 38,762 | −31.5% | plan? late |
| Nov 8, 2018 MForm 4 → | Nov 13, 5:08 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 15,807 | $13.21 | $208,847 | 50,570 | — | plan? late |
| Nov 8, 2018 SForm 4 → | Nov 9, 9:52 pm EST | Jason B. ShandellPresident and General Counsel, Director | 52,296 | $20.77 | $1,086,420 | 199,505 | −20.8% | plan? |
| Nov 8, 2018 MForm 4 → | Nov 9, 9:52 pm EST | Jason B. ShandellPresident and General Counsel, Director | 52,296 | $10.59 | $554,065 | 215,600 | — | plan? |
| Aug 16, 2018 SForm 4 → | Aug 17, 4:05 pm EDT | William J PetersCFO, SVP & Treasurer | 2,407 | $17.59 | $42,333 | 86,836 | −2.70% | plan? |
| Aug 14, 2018 SForm 4 → | Aug 15, 4:29 pm EDT | Richard K PrinsDirector | 10,000 | $17.82 | $178,180 | 35,434 | −22.0% | plan? |
| Aug 14, 2018 MForm 4 → | Aug 15, 4:29 pm EDT | Richard K PrinsDirector | 10,000 | $14.66 | $146,600 | 45,434 | — | plan? |
| Jul 11, 2018 SForm 4 → | Jul 12, 5:53 pm EDT | Jason B. ShandellPresident and General Counsel, Director | 14,399 | $16.77 | $241,422 | 199,505 | −6.73% | plan? |
| Jul 9, 2018 SForm 4 → | Jul 11, 4:03 pm EDT | William J PetersCFO, SVP & Treasurer | 3,250 | $16.46 | $53,498 | 89,243 | −3.51% | plan? |
| Jul 2, 2018 FMForm 4 → | Jul 3, 5:06 pm EDT | Jack Y. Zhang +1CEO & Chief Scientific Officer, Director, 10% Owner | 956,820 | $13.61 | $13,020,626 | 1,366,706 | — | plan? |
| Jun 15, 2018 FForm 4 → | Jun 18, 4:59 pm EDT | Rong ZhouEVP, Production Center | 134 | $16.88 | $2,262 | 55,476 | — | plan? |
| Jun 14, 2018 AForm 4 → | Jun 18, 4:57 pm EDT | Yakob LiawatidewiSVP Corp Admin Center | 1,474 | — | — | 40,763 | — | plan? |
| Jun 12, 2018 SForm 4 → | Jun 13, 4:05 pm EDT | Michael A ZasloffDirector | 15,000 | $16.52 | $247,842 | 29,845 | −33.4% | plan? |
| Jun 7, 2018 AForm 4 → | Jun 11, 8:17 pm EDT | Michael A ZasloffDirector | 6,590 | — | — | 44,845 | — | plan? |
| Jun 7, 2018 AForm 4 → | Jun 11, 8:15 pm EDT | Stephen B. ShohetDirector | 6,590 | — | — | 30,706 | — | plan? |
| Jun 7, 2018 AForm 4 → | Jun 11, 8:11 pm EDT | Richard K PrinsDirector | 6,590 | — | — | 35,434 | — | plan? |
| Jun 7, 2018 AForm 4 → | Jun 11, 8:10 pm EDT | Floyd F. PetersenDirector | 6,590 | — | — | 71,151 | — | plan? |
| Jun 7, 2018 AFForm 4 → | Jun 11, 8:08 pm EDT | Howard LeeDirector | 8,344 | $16.67 | $29,239 | 123,381 | — | plan? |
| Jun 7, 2018 AForm 4 → | Jun 11, 8:05 pm EDT | Richard KooDirector | 6,590 | — | — | 241,928 | — | plan? |
| May 15, 2018 PForm 4 → | May 17, 7:05 pm EDT | Jack Y. Zhang +1CEO & Chief Scientific Officer, Director, 10% Owner | 40,000 | $16.07 | $642,824 | 2,080,619 | +1.96% | plan? |
| Apr 21, 2018 FForm 4 → | Apr 23, 5:11 pm EDT | William J PetersCFO, SVP & Treasurer | 1,273 | $19.31 | $24,582 | 91,374 | — | plan? |
| Mar 26, 2018 FForm 4 → | Mar 28, 5:23 pm EDT | Rong ZhouEVP, Production Center | 535 | $18.61 | $9,956 | 54,434 | — | plan? |
| Mar 26, 2018 FForm 4 → | Mar 28, 5:22 pm EDT | William J PetersCFO, SVP & Treasurer | 1,677 | $18.61 | $31,209 | 92,647 | — | plan? |
| Mar 26, 2018 FForm 4 → | Mar 28, 5:22 pm EDT | Jason B. ShandellPresident and General Counsel, Director | 12,325 | $18.52 | $228,272 | 212,561 | — | plan? |
| Mar 26, 2018 FForm 4 → | Mar 28, 5:21 pm EDT | Jack Y. Zhang +1CEO & Chief Scientific Officer, Director, 10% Owner | 29,572 | $18.61 | $550,335 | 1,346,129 | — | plan? |
| Mar 19, 2018 SForm 4 → | Mar 20, 8:02 pm EDT | Jason B. ShandellPresident and General Counsel, Director | 20,000 | $19.43 | $388,638 | 224,886 | −8.17% | plan? |
| Mar 16, 2018 FForm 4 → | Mar 20, 8:06 pm EDT | Rong ZhouEVP, Production Center | 2,097 | $19.91 | $41,751 | 54,969 | — | plan? |
| Mar 16, 2018 FForm 4 → | Mar 20, 8:04 pm EDT | William J PetersCFO, SVP & Treasurer | 6,349 | $19.91 | $126,409 | 94,324 | — | plan? |
| Mar 16, 2018 FForm 4 → | Mar 20, 8:02 pm EDT | Jason B. ShandellPresident and General Counsel, Director | 11,981 | $19.91 | $238,542 | 244,886 | — | plan? |
| Mar 16, 2018 FForm 4 → | Mar 20, 8:00 pm EDT | Jack Y. Zhang +1CEO & Chief Scientific Officer, Director, 10% Owner | 67,207 | $19.91 | $1,338,091 | 1,354,973 | — | plan? |
| Mar 15, 2018 SForm 4 → | Mar 16, 6:19 pm EDT | Richard K PrinsDirector | 16,598 | $19.90 | $330,318 | 28,844 | −36.5% | plan? |
| Mar 15, 2018 MForm 4 → | Mar 16, 6:19 pm EDT | Richard K PrinsDirector | 16,598 | $14.66 | $243,327 | 45,442 | — | plan? |
| Mar 15, 2018 AForm 4 → | Mar 16, 6:16 pm EDT | Rong ZhouEVP, Production Center | 8,969 | — | — | 57,066 | — | plan? |
| Mar 15, 2018 AForm 4 → | Mar 16, 6:16 pm EDT | William J PetersCFO, SVP & Treasurer | 22,359 | — | — | 100,673 | — | plan? |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 16, 2026 MForm 4 → | Sep 17, 6:19 pm EDT | Rong ZhouSENIOR EVP, PRODUCTION CENTER | 10,000 | — | — | 19,424 | — | |
| Aug 7, 2026 MForm 4 → | Aug 11, 4:57 pm EDT | William J PetersCFO, EVP & TREASURER, Director | 5,053 | — | — | 0 | — | 10b5-1 |
| Jul 9, 2026 AForm 4 → | Jul 13, 7:38 pm EDT | Anthony T PierceDirector | 16,646 | — | — | 16,646 | — | |
| Jun 1, 2026 AForm 4 → | Jun 3, 9:22 pm EDT | Richard K PrinsDirector | 17,365 | — | — | 17,365 | — | |
| Jun 1, 2026 AForm 4 → | Jun 3, 9:20 pm EDT | Howard LeeDirector | 17,365 | — | — | 17,365 | — | |
| Jun 1, 2026 AForm 4 → | Jun 3, 8:34 pm EDT | Michael A ZasloffDirector | 17,365 | — | — | 17,365 | — | |
| Jun 1, 2026 AForm 4 → | Jun 3, 8:33 pm EDT | Diane G. GerstDirector | 17,365 | — | — | 17,365 | — | |
| Jun 1, 2026 AForm 4 → | Jun 3, 8:31 pm EDT | David Russell GaughDirector | 17,365 | — | — | 17,365 | — | |
| Jun 1, 2026 AForm 4 → | Jun 3, 8:29 pm EDT | Gayle DeflinDirector | 17,365 | — | — | 17,365 | — | |
| Mar 4, 2019 MForm 4 → | Mar 6, 5:20 pm EST | William J PetersCFO, SVP & Treasurer | 1,500 | — | — | 72,548 | — | |
| Mar 1, 2019 MForm 4 → | Mar 4, 8:44 pm EST | Rong ZhouEVP, Production Center | 3,200 | — | — | 6,400 | — | |
| Mar 1, 2019 MForm 4 → | Mar 1, 8:01 pm EST | Jason B. ShandellPresident and General Counsel, Director | 7,500 | — | — | 0 | — | |
| Feb 15, 2019 MForm 4 → | Feb 15, 8:09 pm EST | William J PetersCFO, SVP & Treasurer | 10,016 | — | — | 74,048 | — | |
| Feb 14, 2019 MForm 4 → | Feb 15, 4:56 pm EST | Jason B. ShandellPresident and General Counsel, Director | 7,519 | — | — | 0 | — | |
| Feb 12, 2019 MForm 4 → | Feb 14, 6:30 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 8,868 | — | — | 8,932 | — | |
| Feb 5, 2019 MForm 4/A → | Mar 4, 8:43 pm EST | Rong ZhouEVP, Production Center | 3,200 | — | — | 9,600 | — | |
| Feb 5, 2019 MForm 4 → | Feb 7, 4:05 pm EST | Rong ZhouEVP, Production Center | 3,200 | — | — | 12,800 | — | amended |
| Feb 5, 2019 MForm 4 → | Feb 6, 8:12 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 9,817 | — | — | 0 | — | |
| Jan 22, 2019 MForm 4 → | Jan 24, 8:47 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 7,000 | — | — | 9,817 | — | |
| Jan 14, 2019 MForm 4 → | Jan 16, 7:10 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 3,183 | — | — | 16,817 | — | |
| Dec 12, 2018 MForm 4 → | Dec 4, 9:01 pm EST | Floyd F. PetersenDirector | 29,278 | — | — | 29,278 | — | |
| Dec 11, 2018 MForm 4 → | Dec 12, 8:39 pm EST | Richard KooDirector | 29,278 | — | — | 0 | — | |
| Dec 10, 2018 MForm 4 → | Dec 12, 8:37 pm EST | Stephen B. ShohetDirector | 58,557 | — | — | 0 | — | |
| Dec 4, 2018 MForm 4 → | Dec 7, 6:36 pm EST | Howard LeeDirector | 29,278 | — | — | 0 | — | |
| Dec 3, 2018 MForm 4 → | Dec 6, 3:54 pm EST | Jason B. ShandellPresident and General Counsel, Director | 16,630 | — | — | 0 | — | |
| Dec 3, 2018 MForm 4 → | Dec 4, 9:00 pm EST | William J PetersCFO, SVP & Treasurer | 10,000 | — | — | 59,600 | — | |
| Nov 30, 2018 MForm 4 → | Dec 3, 8:08 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 11,500 | — | — | 0 | — | |
| Nov 29, 2018 MForm 4 → | Nov 30, 4:15 pm EST | Richard K PrinsDirector | 5,000 | — | — | 0 | — | |
| Nov 14, 2018 MForm 4 → | Nov 15, 7:23 pm EST | Michael A ZasloffDirector | 29,278 | — | — | 0 | — | |
| Nov 14, 2018 MForm 4 → | Nov 15, 7:21 pm EST | Richard K PrinsDirector | 5,000 | — | — | 5,000 | — | |
| Nov 8, 2018 MForm 4 → | Nov 13, 5:09 pm EST | William J PetersCFO, SVP & Treasurer | 29,800 | — | — | 69,600 | — | late |
| Nov 8, 2018 MForm 4 → | Nov 13, 5:08 pm EST | Yakob LiawatidewiSVP Corp Admin Center | 15,807 | — | — | 0 | — | late |
| Nov 8, 2018 MForm 4 → | Nov 9, 9:52 pm EST | Jason B. ShandellPresident and General Counsel, Director | 52,296 | — | — | 0 | — | |
| Aug 14, 2018 MForm 4 → | Aug 15, 4:29 pm EDT | Richard K PrinsDirector | 10,000 | — | — | 10,000 | — | |
| Jul 2, 2018 MForm 4 → | Jul 3, 5:06 pm EDT | Jack Y. Zhang +1CEO & Chief Scientific Officer, Director, 10% Owner | 506,336 | — | — | 0 | — | |
| Jun 14, 2018 AForm 4 → | Jun 18, 4:57 pm EDT | Yakob LiawatidewiSVP Corp Admin Center | 3,319 | — | — | 3,319 | — | |
| Jun 7, 2018 AForm 4 → | Jun 11, 8:17 pm EDT | Michael A ZasloffDirector | 16,679 | — | — | 16,679 | — | |
| Jun 7, 2018 AForm 4 → | Jun 11, 8:15 pm EDT | Stephen B. ShohetDirector | 16,679 | — | — | 16,679 | — | |
| Jun 7, 2018 AForm 4 → | Jun 11, 8:11 pm EDT | Richard K PrinsDirector | 16,679 | — | — | 16,679 | — | |
| Jun 7, 2018 AForm 4 → | Jun 11, 8:10 pm EDT | Floyd F. PetersenDirector | 16,679 | — | — | 16,679 | — | |
| Jun 7, 2018 AForm 4 → | Jun 11, 8:08 pm EDT | Howard LeeDirector | 16,679 | — | — | 16,679 | — | |
| Jun 7, 2018 AForm 4 → | Jun 11, 8:05 pm EDT | Richard KooDirector | 16,679 | — | — | 16,679 | — | |
| Mar 15, 2018 MForm 4 → | Mar 16, 6:19 pm EDT | Richard K PrinsDirector | 16,598 | — | — | 20,000 | — | |
| Mar 15, 2018 AForm 4 → | Mar 16, 6:16 pm EDT | Rong ZhouEVP, Production Center | 20,827 | — | — | 20,827 | — | |
| Mar 15, 2018 AForm 4 → | Mar 16, 6:16 pm EDT | William J PetersCFO, SVP & Treasurer | 51,921 | — | — | 51,921 | — | |
| Mar 15, 2018 AForm 4 → | Mar 16, 6:14 pm EDT | Jason B. ShandellPresident and General Counsel, Director | 92,692 | — | — | 92,692 | — | |
| Mar 15, 2018 AForm 4 → | Mar 16, 6:13 pm EDT | Jack Y. Zhang +1CEO & Chief Scientific Officer, Director, 10% Owner | 390,084 | — | — | 116,392 | — | |
| Mar 13, 2018 MForm 4 → | Mar 15, 4:16 pm EDT | William J PetersCFO, SVP & Treasurer | 19,801 | — | — | 99,400 | — | |
| Mar 13, 2018 MForm 4 → | Mar 15, 4:15 pm EDT | Jason B. ShandellPresident and General Counsel, Director | 700 | — | — | 5,300 | — | |
| Dec 15, 2017 MForm 4 → | Dec 19, 6:25 pm EST | Jack Y. Zhang +1CEO & Chief Scientific Officer, Director, 10% Owner | 1,012,675 | — | — | 186,545 | — | |
| Dec 14, 2017 MForm 4 → | Dec 14, 8:03 pm EST | Stephen B. ShohetDirector | 7,866 | — | — | 0 | — | |
| Dec 7, 2017 MForm 4 → | Dec 8, 4:30 pm EST | Stephen B. ShohetDirector | 7,862 | — | — | 7,866 | — | |
| Nov 30, 2017 MForm 4 → | Nov 30, 7:38 pm EST | Stephen B. ShohetDirector | 7,862 | — | — | 15,728 | — | |
| Nov 22, 2017 MForm 4 → | Nov 24, 8:00 pm EST | Stephen B. ShohetDirector | 7,862 | — | — | 23,590 | — | |
| Nov 16, 2017 MForm 4 → | Nov 17, 8:02 pm EST | Stephen B. ShohetDirector | 7,862 | — | — | 31,452 | — | |
| Nov 13, 2017 MForm 4 → | Nov 14, 7:39 pm EST | Jack Y. Zhang +1CEO & Chief Scientific Officer, Director, 10% Owner | 506,337 | — | — | 559,636 | — | |
| Nov 9, 2017 MForm 4 → | Nov 9, 9:04 pm EST | Stephen B. ShohetDirector | 7,862 | — | — | 39,314 | — | |
| Nov 2, 2017 MForm 4 → | Nov 3, 4:05 pm EDT | Stephen B. ShohetDirector | 7,862 | — | — | 47,176 | — | |
| Oct 26, 2017 MForm 4 → | Oct 26, 6:21 pm EDT | Stephen B. ShohetDirector | 7,862 | — | — | 55,038 | — | |
| Oct 19, 2017 MForm 4 → | Oct 19, 8:01 pm EDT | Stephen B. ShohetDirector | 7,862 | — | — | 62,900 | — | |
| Oct 12, 2017 MForm 4 → | Oct 13, 8:02 pm EDT | Stephen B. ShohetDirector | 7,862 | — | — | 70,762 | — | |
| Oct 5, 2017 MForm 4 → | Oct 6, 5:54 pm EDT | Diane G. GerstEVP, QA & Regulatory Affairs | 8,444 | — | — | 25,330 | — | |
| Oct 4, 2017 MForm 4 → | Oct 6, 5:52 pm EDT | Floyd F. PetersenDirector | 39,312 | — | — | 0 | — | |
| Oct 2, 2017 MForm 4 → | Oct 3, 6:18 pm EDT | Michael A ZasloffDirector | 63,624 | — | — | 0 | — | |
| Sep 13, 2017 MForm 4 → | Sep 15, 4:30 pm EDT | Jack Y. Zhang +1CEO & Chief Scientific Officer, Director, 10% Owner | 315,619 | — | — | 0 | — | |
| Aug 14, 2017 MForm 4 → | Aug 16, 6:57 pm EDT | Richard K PrinsDirector | 10,000 | — | — | 0 | — | |
| Jun 8, 2017 AForm 4 → | Jun 12, 8:19 pm EDT | Michael A ZasloffDirector | 20,291 | — | — | 20,291 | — | |
| Jun 8, 2017 AForm 4 → | Jun 12, 8:15 pm EDT | Stephen B. ShohetDirector | 20,291 | — | — | 20,291 | — | |
| Jun 8, 2017 AMForm 4 → | Jun 12, 8:10 pm EDT | Richard K PrinsDirector | 30,291 | — | — | 10,000 | — | |
| Jun 8, 2017 AForm 4 → | Jun 12, 8:05 pm EDT | Floyd F. PetersenDirector | 20,291 | — | — | 20,291 | — | |
| Jun 8, 2017 AForm 4 → | Jun 12, 7:59 pm EDT | Howard LeeDirector | 20,291 | — | — | 20,291 | — | |
| Jun 8, 2017 AForm 4 → | Jun 12, 7:49 pm EDT | Richard KooDirector | 20,291 | — | — | 20,291 | — | |
| Jun 1, 2017 MForm 4 → | Jun 1, 8:06 pm EDT | Michael A ZasloffDirector | 15,000 | — | — | 63,624 | — | |
| May 23, 2017 MForm 4 → | May 25, 4:15 pm EDT | Jack Y. Zhang +1CEO & Chief Scientific Officer, Director, 10% Owner | 647,343 | — | — | 0 | — | |
| May 11, 2017 MForm 4 → | May 12, 4:30 pm EDT | Richard K PrinsDirector | 7,500 | — | — | 20,000 | — | |
| Mar 16, 2017 AForm 4 → | Mar 20, 9:04 pm EDT | Rong ZhouEVP, Production Center | 29,424 | — | — | 29,424 | — | |
| Mar 16, 2017 AForm 4 → | Mar 20, 9:03 pm EDT | Diane G. GerstEVP, QA & Regulatory Affairs | 27,088 | — | — | 27,088 | — | |
| Mar 16, 2017 AForm 4 → | Mar 20, 9:00 pm EDT | William J PetersCFO, SVP & Treasurer | 84,064 | — | — | 84,064 | — | |
| Mar 16, 2017 AForm 4 → | Mar 20, 8:58 pm EDT | Jason B. ShandellPresident and General Counsel, Director | 158,784 | — | — | 158,784 | — | |
| Mar 16, 2017 AForm 4 → | Mar 20, 8:50 pm EDT | Jack Y. Zhang +1CEO & Chief Scientific Officer, Director, 10% Owner | 701,690 | — | — | 211,213 | — | |
| Nov 25, 2016 MForm 4 → | Nov 29, 6:13 pm EST | Jason B. ShandellPresident and General Counsel, Director | 26,335 | — | — | 68,657 | — | |
| Nov 14, 2016 MForm 4 → | Nov 16, 4:30 pm EST | Howard LeeDirector | 37,994 | — | — | 0 | — | |
| Nov 11, 2016 MForm 4 → | Nov 15, 4:18 pm EST | Richard K PrinsDirector | 5,000 | — | — | 27,500 | — | |
| Sep 26, 2016 MForm 4 → | Sep 27, 6:26 pm EDT | Jason B. ShandellPresident and General Counsel, Director | 56,996 | — | — | 94,992 | — | |
| Sep 20, 2016 MForm 4 → | Sep 22, 4:39 pm EDT | Jack Y. Zhang +1CEO & Chief Science Officer, Director, 10% Owner | 444,199 | — | — | 0 | — | |
| Sep 1, 2016 MForm 4 → | Sep 2, 7:05 pm EDT | Howard LeeDirector | 10,381 | — | — | 0 | — | |
| Aug 22, 2016 MForm 4 → | Aug 24, 6:38 pm EDT | Jason B. ShandellPresident and General Counsel, Director | 10,000 | — | — | 46,996 | — | |
| Aug 19, 2016 MForm 4 → | Aug 19, 7:26 pm EDT | Diane G. GerstEVP, QA & Regulatory Affairs | 24,046 | — | — | 14,000 | — | |
| Aug 12, 2016 MForm 4 → | Aug 16, 8:32 pm EDT | Stephen B. ShohetDirector | 48,375 | — | — | 0 | — | |
| Aug 12, 2016 MForm 4 → | Aug 16, 8:31 pm EDT | Michael A ZasloffDirector | 48,375 | — | — | 0 | — | |
| Aug 11, 2016 MForm 4 → | Aug 12, 4:31 pm EDT | Richard K PrinsDirector | 13,993 | — | — | 32,500 | — | |
| Jun 9, 2016 AForm 4 → | Jun 13, 8:33 pm EDT | Michael A ZasloffDirector | 25,827 | — | — | 25,827 | — | |
| Jun 9, 2016 AForm 4 → | Jun 13, 8:32 pm EDT | Stephen B. ShohetDirector | 25,827 | — | — | 25,827 | — | |
| Jun 9, 2016 AMForm 4 → | Jun 13, 8:28 pm EDT | Richard K PrinsDirector | 33,327 | — | — | 3,898 | — | |
| Jun 9, 2016 AForm 4 → | Jun 13, 8:27 pm EDT | Floyd F. PetersenDirector | 25,827 | — | — | 25,827 | — | |
| Jun 9, 2016 AForm 4 → | Jun 13, 8:25 pm EDT | Howard LeeDirector | 25,827 | — | — | 25,827 | — | |
| Jun 9, 2016 AForm 4 → | Jun 13, 8:21 pm EDT | Richard KooDirector | 25,827 | — | — | 25,827 | — | |
| Apr 18, 2016 MForm 4 → | Apr 20, 4:52 pm EDT | Diane G. GerstEVP, QA & Regulatory Affairs | 19,817 | — | — | 6,183 | — | |
| Mar 17, 2016 AForm 4 → | Mar 21, 8:12 pm EDT | Diane G. GerstEVP, QA & Regulatory Affairs | 33,774 | — | — | 33,774 | — | |
| Mar 17, 2016 AForm 4 → | Mar 21, 8:09 pm EDT | Rong ZhouEVP, Production | 34,438 | — | — | 34,438 | — |