安法斯塔製藥公司
US ˙ NasdaqGS ˙ US03209R1032

簡介

本頁面提供了有關 Rong Zhou 已知的內部交易歷史的全面分析。內部人士包括公司的高管、董事或重要投資者。一般而言，基於內幕、非公開信息進行交易是非法的。這並不意味著他們在自己的公司進行任何交易都是非法的。但是，他們必須透過Form 4向美國證券交易委員會（SEC）報告所有交易。盡管存在這些限制，學術研究表明，內部人士 - 整體而言 - 在自己公司中的投資表現往往優於市場。

平均交易盈利能力

「平均交易盈利能力」衡量了內部人士在過去三年中所有非計劃性的公開市場購買交易的平均回報率。計算過程包括檢查每筆交易，排除了作為10b5-1交易計劃的一部分的交易。然後，對每筆交易在3、6和12個月的表現進行平均，以生成該筆交易最終的表現指標。最終，將所有交易的表現指標進行平均，計算出內部人士的總體平均表現指標。列表僅包含在過去兩年中進行過至少三筆交易的內部人士。

如果內部人士的交易盈利能力顯示為"N/A"，則可能是因為該內部人士在過去三年內沒有進行任何公開市場購買交易，或者他們進行的交易距離現在太近，無法計算出可靠的表現指標。

更新頻率：每日

查看收益最高的的內幕交易者列表。

查看排名最高的內部人士。
報告內部持倉的公司

SEC文件顯示Rong Zhou已報告在以下公司擁有持倉或進行了交易：

證券 職位 最新報告的持倉
US:AMPH / Amphastar Pharmaceuticals, Inc. SENIOR EVP, PRODUCTION CENTER 171,554
如何解讀這些圖表

以下圖表顯示了在Rong Zhou進行的每筆公開市場非計劃交易後證券的股價表現。非計劃交易是指沒有作為10b5-1交易計劃的一部分而進行的交易。股價表現以累積百分比變化的方式繪製。例如，如果一筆內部人士交易是在2019年1月1日進行的，該圖表將顯示該證券的每日百分比變化直至當前日期。如果在此期間股價從10美元漲至15美元，則股價的累積百分比變化將為50%。從10美元漲至20美元的價格變化將為100%，而從10美元跌至5美元的價格變化將為-50%。

最終，我們將評估內部人士的交易與股價的超額回報（正向或負向）之間的相關性，以判斷內部人士是否在交易中利用內部信息獲利。如果內部人士有這樣的行為，我們預期看到（a）購買後的正回報，或者（b）賣出後的負回報。對於情況（a），購買圖表將顯示一系列向上傾斜的曲線，表示每次購買後都有正回報。對於情況（b），賣出圖表將顯示一系列向下傾斜的曲線，表示每次賣出後都有負回報。

然而，僅憑這一點還不足以得出結論。例如，如果公司的股價在多年內呈現非周期性上升，我們會預期所有購買後的圖表都呈現向上傾斜。同樣地，多年來呈現非周期性下降的股價會導致賣出後的圖表也呈現向下傾斜。這兩種情況的圖表都不能表示內部人士在進行內幕交易。

最有力的指標是在公司股價呈極度循環波動的情況下，「購買」圖表顯示正向信號，而「賣出」圖表顯示負向趨勢。這種情況強烈暗示內部人士可能根據內幕信息精確地計時進行交易，以獲得財務優勢。

AMPH / Amphastar Pharmaceuticals, Inc.內部人士買入 - 短期收益分析

在這一部分，我們分析了在 AMPH / Amphastar Pharmaceuticals, Inc. 中進行的每筆非計劃的公開市場內部人士購買的盈利情況。這種分析有助於了解內部人士是否持續產生異常的回報，以及是否值得跟踪。該分析基於每筆交易後一年的情況，結果僅為理論值。

以下表格顯示了最近的自動交易計劃之外的公開市場購買。

交易日期 證券代碼 內部人士 報告
股數		 Reported
價格		 經調整
股數		 經調整
價格		 成本基礎 達到最高利潤的
天數		 達到最高利潤時的
價格		 最高
淨利 ($)		 最高回報率（%）
當前未知該內部人士及證券組合進行過任何未預先計劃的公開市場交易。

經調整價格 已按拆股調整。經調整股數 已按拆股調整。

AMPH / Amphastar Pharmaceuticals, Inc. Insider Trades
AMPH / Amphastar Pharmaceuticals, Inc.內部人士賣出 - 短期虧損分析

在這一部分，我們分析了在 AMPH / Amphastar Pharmaceuticals, Inc. 中進行的每筆非計劃的公開市場內部人士賣出所達成的短期虧損規避。如果存在持續的虧損規避模式，可能表明未來的內部人士賣出交易預示著價格的下跌。該分析基於每筆交易後一年的情況，

以下表格顯示了最近的自動交易計劃之外的公開市場購買。

交易日期 證券代碼 內部人士 報告
股數		 Reported
價格		 經調整
股數		 經調整
價格		 成本基礎 達到最低利潤的
天數		 達到最低利潤時的
價格		 避免的
最高損失金額($)		 避免的
最高損失率($)
2025-12-17 AMPH Zhou Rong 9,787 26.1959 9,787 26.1959 256,379 149 16.8700 -91,272 -35.60
2024-12-13 AMPH Zhou Rong 8,000 45.2300 8,000 45.2300 361,840
2024-12-12 AMPH Zhou Rong 7,000 44.4250 7,000 44.4250 310,975
2024-11-12 AMPH Zhou Rong 6,893 48.8800 6,893 48.8800 336,930
2024-09-13 AMPH Zhou Rong 3,000 48.2615 3,000 48.2615 144,784
2024-08-26 AMPH Zhou Rong 4,000 48.3500 4,000 48.3500 193,400
2023-12-04 AMPH Zhou Rong 3,514 59.5800 3,514 59.5800 209,364
2023-12-01 AMPH Zhou Rong 4,316 58.5800 4,316 58.5800 252,831
2023-06-15 AMPH Zhou Rong 5,000 51.7893 5,000 51.7893 258,946
2023-06-13 AMPH Zhou Rong 5,000 48.2400 5,000 48.2400 241,200
2023-05-18 AMPH Zhou Rong 10,000 44.2050 10,000 44.2050 442,050
2021-06-09 AMPH Zhou Rong 4,732 19.5800 4,732 19.5800 92,653
2021-06-08 AMPH Zhou Rong 8,180 19.3370 8,180 19.3370 158,177
2021-05-14 AMPH Zhou Rong 17,419 19.7178 17,419 19.7178 343,464
2021-05-13 AMPH Zhou Rong 700 19.5800 700 19.5800 13,706
2020-06-04 AMPH Zhou Rong 9,806 19.1900 9,806 19.1900 188,177
2020-06-03 AMPH Zhou Rong 13,163 18.8162 13,163 18.8162 247,678
2016-06-15 AMPH Zhou Rong 1,551 15.8503 1,551 15.8503 24,584
2015-12-16 AMPH Zhou Rong 772 14.2901 772 14.2901 11,032
2015-06-17 AMPH Zhou Rong 1,000 16.4800 1,000 16.4800 16,480

經調整價格 已按拆股調整。經調整股數 已按拆股調整。

AMPH / Amphastar Pharmaceuticals, Inc. Insider Trades
歷史內部人交易

該表格顯示了由 Rong Zhou 進行的所有內幕交易的完整列表，這些交易已向美國證券交易委員會（SEC）披露。

呈報日期 交易日期 表格 證券代碼 證券 代碼 10b5-1 股份 剩餘股份 %
變化		 每股
股價		 交易
金額		 剩餘
金額
2026-03-17 2026-03-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,225 171,554 -0.71 18.18 -22,270 3,118,852
2026-03-11 2026-03-10 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -2,215 172,779 -1.27 18.91 -41,886 3,267,251
2026-03-11 2026-03-09 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Srock 		A - Award 39,432 174,994 29.09
2026-03-10 2026-03-06 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,357 135,562 -0.99 19.34 -26,244 2,621,769
2026-03-06 2026-03-04 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,124 136,919 -0.81 19.96 -22,435 2,732,903
2025-12-18 2025-12-17 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -9,787 138,043 -6.62 26.20 -256,379 3,616,161
2025-12-18 2025-12-17 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 9,787 147,830 7.09 11.33 110,887 1,674,914
2025-03-18 2025-03-17 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Srock 		F - Taxes -1,967 137,497 -1.41 27.69 -54,466 3,807,292
2025-03-18 2025-03-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,222 139,464 -0.87 26.66 -32,579 3,718,110
2025-03-12 2025-03-10 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Srock 		A - Award 24,692 140,686 21.29
2025-03-10 2025-03-06 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,354 115,994 -1.15 28.32 -38,345 3,284,950
2025-03-06 2025-03-04 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,121 117,348 -0.95 27.62 -30,962 3,241,152
2024-12-16 2024-12-13 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -8,000 118,469 -6.33 45.23 -361,840 5,358,353
2024-12-16 2024-12-13 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 8,000 126,469 6.75 11.33 90,640 1,432,894
2024-12-16 2024-12-12 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -7,000 118,469 -5.58 44.42 -310,975 5,262,985
2024-12-16 2024-12-12 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 7,000 125,469 5.91 11.33 79,310 1,421,564
2024-11-13 2024-11-12 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -6,893 118,388 -5.50 48.88 -336,930 5,786,805
2024-11-13 2024-11-12 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 6,893 125,281 5.82 14.95 103,050 1,872,951
2024-09-17 2024-09-13 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Srock 		S - Sale -3,000 118,388 -2.47 48.26 -144,784 5,713,582
2024-09-17 2024-09-13 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Srock 		M - Exercise 3,000 121,388 2.53 14.95 44,850 1,814,751
2024-08-27 2024-08-26 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Srock 		S - Sale -4,000 118,388 -3.27 48.35 -193,400 5,724,060
2024-08-27 2024-08-26 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Srock 		M - Exercise 4,000 122,388 3.38 14.95 59,800 1,829,701
2024-03-19 2024-03-17 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,961 118,016 -1.63 43.05 -84,421 5,080,589
2024-03-19 2024-03-16 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Srock 		F - Taxes -2,355 119,977 -1.93 43.05 -101,383 5,165,010
2024-03-19 2024-03-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Srock 		F - Taxes -1,219 122,332 -0.99 43.05 -52,478 5,266,393
2024-03-08 2024-03-06 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Srock 		F - Taxes -1,390 123,551 -1.11 46.31 -64,371 5,721,647
2024-03-06 2024-03-04 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Srock 		A - Award 12,521 124,941 11.14
2023-12-05 2023-12-04 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -3,514 112,420 -3.03 59.58 -209,364 6,697,984
2023-12-05 2023-12-04 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 3,514 115,934 3.13 16.19 56,892 1,876,971
2023-12-05 2023-12-01 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -4,316 112,420 -3.70 58.58 -252,831 6,585,564
2023-12-05 2023-12-01 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 4,316 116,736 3.84 14.40 62,150 1,680,998
2023-06-21 2023-06-20 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 9,651 112,341 9.40 11.33 109,346 1,272,824
2023-06-20 2023-06-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 1,171 102,690 1.15 16.19 18,958 1,662,551
2023-06-20 2023-06-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 4,631 101,519 4.78 14.95 69,233 1,517,709
2023-06-20 2023-06-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -5,000 96,888 -4.91 51.79 -258,946 5,017,762
2023-06-20 2023-06-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 13,575 101,888 15.37 14.40 195,480 1,467,187
2023-06-14 2023-06-13 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -5,000 88,313 -5.36 48.24 -241,200 4,260,219
2023-06-14 2023-06-13 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 5,000 93,313 5.66 14.40 72,000 1,343,707
2023-05-19 2023-05-18 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -10,000 87,598 -10.25 44.20 -442,050 3,872,270
2023-05-19 2023-05-18 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 10,000 97,598 11.42 14.40 144,000 1,405,411
2023-03-20 2023-03-17 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,901 87,598 -2.12 36.29 -68,987 3,178,931
2023-03-20 2023-03-16 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -2,283 89,499 -2.49 37.60 -85,841 3,365,162
2023-03-17 2023-03-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -2,057 91,782 -2.19 36.84 -75,780 3,381,249
2023-03-08 2023-03-06 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		A - Award 15,129 93,839 19.22
2022-03-18 2022-03-17 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -2,447 77,583 -3.06 34.18 -83,638 2,651,787
2022-03-18 2022-03-16 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -2,283 80,030 -2.77 34.22 -78,124 2,738,627
2022-03-17 2022-03-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		A - Award 31,516 31,516
2022-03-17 2022-03-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,652 82,313 -1.97 34.74 -57,390 2,859,554
2022-03-17 2022-03-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		A - Award 13,658 83,965 19.43
2022-03-01 2022-02-25 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		M - Exercise -7,000 0 -100.00
2022-03-01 2022-02-25 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale X -13,246 70,307 -15.85 28.77 -381,087 2,022,732
2022-03-01 2022-02-25 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 7,000 83,553 9.14 10.93 76,510 913,234
2022-02-09 2022-02-08 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		M - Exercise -7,000 7,000 -50.00
2022-02-09 2022-02-08 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale X -7,000 76,553 -8.38 26.77 -187,390 2,049,324
2022-02-09 2022-02-08 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 7,000 83,553 9.14 10.93 76,510 913,234
2022-01-11 2022-01-10 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		M - Exercise -14,000 14,000 -50.00
2022-01-11 2022-01-10 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale X -10,251 76,553 -11.81 25.77 -264,156 1,972,679
2022-01-11 2022-01-10 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale X -10,677 86,804 -10.95 24.96 -266,528 2,166,871
2022-01-11 2022-01-10 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 14,000 97,481 16.77 10.93 153,020 1,065,467
2021-11-12 2021-11-11 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		M - Exercise -7,813 0 -100.00
2021-11-12 2021-11-11 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale X -7,813 83,121 -8.59 21.67 -169,308 1,801,232
2021-11-12 2021-11-11 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 7,813 90,934 9.40 10.48 81,880 952,988
2021-08-04 2021-08-02 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		M - Exercise -6,000 7,813 -43.44
2021-08-04 2021-08-02 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale X -9,123 83,121 -9.89 21.24 -193,734 1,765,141
2021-08-04 2021-08-02 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 6,000 92,244 6.96 10.48 62,880 966,717
2021-07-27 2021-07-26 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		M - Exercise -6,000 13,813 -30.28
2021-07-27 2021-07-26 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale X -6,000 86,244 -6.50 20.87 -125,220 1,799,912
2021-07-27 2021-07-26 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 6,000 92,244 6.96 10.48 62,880 966,717
2021-07-22 2021-07-20 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		M - Exercise -5,187 19,813 -20.75
2021-07-22 2021-07-20 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale X -5,187 86,244 -5.67 20.57 -106,697 1,774,039
2021-07-22 2021-07-20 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 5,187 91,431 6.01 10.48 54,360 958,197
2021-06-10 2021-06-09 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -4,732 86,244 -5.20 19.58 -92,653 1,688,658
2021-06-10 2021-06-08 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		M - Exercise -8,180 0 -100.00
2021-06-10 2021-06-08 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -8,180 90,976 -8.25 19.34 -158,177 1,759,203
2021-06-10 2021-06-08 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 8,180 99,156 8.99 14.23 116,401 1,410,990
2021-05-17 2021-05-14 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		M - Exercise -11,120 8,180 -57.62
2021-05-17 2021-05-14 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -17,419 89,966 -16.22 19.72 -343,464 1,773,932
2021-05-17 2021-05-14 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 11,120 107,385 11.55 14.23 158,238 1,528,089
2021-05-17 2021-05-13 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		M - Exercise -700 19,300 -3.50
2021-05-17 2021-05-13 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -700 96,265 -0.72 19.58 -13,706 1,884,869
2021-05-17 2021-05-13 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 700 96,965 0.73 14.23 9,961 1,379,812
2021-03-18 2021-03-17 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		A - Award 51,621 51,621
2021-03-18 2021-03-17 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		A - Award 21,984 96,265 29.60
2021-03-18 2021-03-16 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -3,303 74,281 -4.26 18.44 -60,907 1,369,742
2021-03-17 2021-03-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,652 77,584 -2.08 19.15 -31,636 1,485,734
2020-06-05 2020-06-04 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		M - Exercise -8,918 0 -100.00
2020-06-05 2020-06-04 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -9,806 79,236 -11.01 19.19 -188,177 1,520,539
2020-06-05 2020-06-04 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 8,918 89,042 11.13 11.41 101,754 1,015,969
2020-06-05 2020-06-03 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		M - Exercise -11,082 8,918 -55.41
2020-06-05 2020-06-03 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -13,163 80,124 -14.11 18.82 -247,678 1,507,629
2020-06-05 2020-06-03 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 11,082 93,287 13.48 11.41 126,446 1,064,405
2020-03-18 2020-03-17 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -992 80,891 -1.21 14.50 -14,384 1,172,920
2020-03-18 2020-03-16 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		A - Award 61,822 61,822
2020-03-18 2020-03-16 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		A - Award 26,400 81,883 47.58
2020-03-18 2020-03-16 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,020 55,483 -1.81 13.03 -13,291 722,943
2020-03-17 2020-03-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,653 56,503 -2.84 14.19 -23,456 801,778
2019-06-17 2019-06-14 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -204 58,156 -0.35 19.82 -4,043 1,152,652
2019-05-07 2019-05-06 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		M - Exercise -9,600 0 -100.00
2019-05-07 2019-05-06 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale X -9,600 57,107 -14.39 22.76 -218,496 1,299,755
2019-05-07 2019-05-06 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 9,600 66,707 16.81 20.26 194,496 1,351,484
2019-03-28 2019-03-26 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -814 57,107 -1.41 20.54 -16,720 1,172,978
2019-03-18 2019-03-17 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,510 57,921 -2.54 20.23 -30,547 1,171,742
2019-03-18 2019-03-16 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,553 59,431 -2.55 20.23 -31,417 1,202,289
2019-03-18 2019-03-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		A - Award 22,541 22,541
2019-03-18 2019-03-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,179 60,984 -1.90 20.23 -23,851 1,233,706
2019-03-18 2019-03-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		A - Award 10,133 62,163 19.48
2019-03-04 2019-03-01 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		M - Exercise -3,200 6,400 -33.33
2019-03-04 2019-03-01 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale X -3,200 52,030 -5.79 25.00 -80,000 1,300,750
2019-03-04 2019-03-01 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 3,200 55,230 6.15 20.26 64,832 1,118,960
2019-03-04 2019-02-05 4/A AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		M - Exercise -3,200 9,600 -25.00
2019-02-07 2019-02-05 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		M - Exercise -3,200 12,800 -20.00
2019-02-07 2019-02-05 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale X -4,289 52,030 -7.62 23.00 -98,647 1,196,690
2019-02-07 2019-02-05 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		M - Exercise 3,200 56,319 6.02 20.26 64,832 1,141,023
2018-12-06 2018-12-03 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale X -1,089 53,119 -2.01 22.00 -23,958 1,168,618
2018-11-13 2018-11-09 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale X -1,089 53,303 -2.00 21.00 -22,869 1,119,363
2018-11-13 2018-11-08 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale X -1,084 54,392 -1.95 20.00 -21,680 1,087,840
2018-06-18 2018-06-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -134 55,476 -0.24 16.88 -2,262 936,435
2018-03-28 2018-03-26 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -535 54,434 -0.97 18.61 -9,956 1,013,017
2018-03-20 2018-03-17 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -969 54,969 -1.73 19.91 -19,293 1,094,433
2018-03-20 2018-03-16 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,128 55,938 -1.98 19.91 -22,458 1,113,726
2018-03-16 2018-03-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		A - Award 20,827 20,827
2018-03-16 2018-03-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		A - Award 8,969 57,066 18.65
2017-06-16 2017-06-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -146 48,096 -0.30 16.18 -2,362 778,193
2017-03-28 2017-03-26 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -568 46,972 -1.19 13.76 -7,816 646,335
2017-03-20 2017-03-17 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -1,248 47,540 -2.56 13.75 -17,160 653,675
2017-03-20 2017-03-16 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		A - Award 29,424 29,424
2017-03-20 2017-03-16 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		A - Award 11,797 48,788 31.89
2016-12-07 2016-12-05 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale X -61 36,991 -0.16 20.70 -1,262 765,547
2016-06-17 2016-06-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -146 36,991 -0.39 15.76 -2,301 582,978
2016-06-17 2016-06-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -1,551 37,137 -4.01 15.85 -24,584 588,633
2016-03-29 2016-03-26 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		F - Taxes -568 37,137 -1.51 11.96 -6,793 444,159
2016-03-21 2016-03-17 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		A - Award 34,438 34,438
2016-03-21 2016-03-17 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		A - Award 11,473 37,705 43.74
2015-12-17 2015-12-16 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -772 25,460 -2.94 14.29 -11,032 363,826
2015-06-19 2015-06-17 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		S - Sale -1,000 26,232 -3.67 16.48 -16,480 432,303
2015-06-17 2015-06-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Employee Stock Option (right to buy) 		A - Award 4,685 4,685
2015-06-17 2015-06-15 4 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		A - Award 1,544 27,232 6.01
2015-06-17 3 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		156,044
2015-06-17 3 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		230,024
2015-06-17 3 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		135,356
2015-06-17 3 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		156,044
2015-06-17 3 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		230,024
2015-06-17 3 AMPH Amphastar Pharmaceuticals, Inc.
Common Stock 		135,356
P
非衍生或衍生證券的公開市場或私下買入
S
非衍生或衍生證券的公開市場或私下賣出
A
公司向內部人員授予、獎勵或以其他方式獲取證券（例如股票期權）
C
衍生工具轉換
D
將證券賣出或轉讓回公司
F
使用從公司收到的證券的一部分來支付行使價或稅務負擔。
G
內部人士贈送或接收他人贈送公司股票
K
股權掉期和類似的避險交易
M
行使或轉換從公司獲得的衍生證券（例如期權）
V
內部人士透過Form 4自願報告的一筆交易
J
其他（附有交易描述的腳註）