Assenagon Asset Management S.A. Amphastar Pharmaceuticals, Inc. Transaction History

Assenagon Asset Management S.A.

$60.5 Billion
Q2 2025

A detailed history of Assenagon Asset Management S.A. transactions in Amphastar Pharmaceuticals, Inc. stock. As of the latest transaction made, Assenagon Asset Management S.A. holds 16,610 shares of AMPH stock, worth $373,891. This represents 0.0% of its overall portfolio holdings.

Number of Shares

16,610

Previous 15,216 9.16%

Holding current value

$373,891

Previous $441,000 13.61%

% of portfolio

0.0%

Previous 0.0%

18 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q2 2025 Jul 11, 2025	BUY	$22.96 - $28.29 $32,006 - $39,436	1,394 Added 9.16%	16,610 $381,000
Q1 2025 Apr 15, 2025	SELL	$26.24 - $38.48 $3.84 Million - $5.63 Million	-146,183 Reduced 90.57%	15,216 $441,000
Q4 2024 Jan 14, 2025	SELL	$36.84 - $53.4 $219,419 - $318,050	-5,956 Reduced 3.56%	161,399 $5.99 Million
Q3 2024 Oct 23, 2024	SELL	$36.99 - $50.09 $823,027 - $1.11 Million	-22,250 Reduced 11.73%	167,355 $8.12 Million
Q2 2024 Jul 18, 2024	BUY	$38.65 - $43.48 $1.36 Million - $1.54 Million	35,306 Added 22.88%	189,605 $7.58 Million
Q1 2024 Apr 24, 2024	BUY	$42.85 - $63.45 $6.61 Million - $9.79 Million	154,299 New	154,299 $6.78 Million
Q2 2023 Jul 25, 2023	SELL	$35.77 - $58.38 $5.61 Million - $9.16 Million	-156,933 Reduced 92.83%	12,123 $696,000
Q1 2023 Apr 18, 2023	SELL	$27.99 - $37.92 $123,799 - $167,720	-4,423 Reduced 2.55%	169,056 $6.34 Million
Q4 2022 Jan 12, 2023	BUY	$27.93 - $31.27 $789,385 - $883,784	28,263 Added 19.46%	173,479 $4.86 Million
Q3 2022 Oct 27, 2022	SELL	$27.56 - $37.75 $7.55 Million - $10.3 Million	-273,801 Reduced 65.34%	145,216 $4.08 Million
Q2 2022 Jul 27, 2022	SELL	$29.79 - $42.29 $255,836 - $363,186	-8,588 Reduced 2.01%	419,017 $14.6 Million
Q1 2022 Apr 25, 2022	SELL	$22.96 - $36.45 $2.3 Million - $3.65 Million	-100,073 Reduced 18.96%	427,605 $15.4 Million
Q4 2021 Feb 01, 2022	BUY	$18.14 - $23.29 $6.35 Million - $8.15 Million	349,875 Added 196.78%	527,678 $12.3 Million
Q3 2021 Oct 19, 2021	SELL	$17.83 - $21.49 $217,775 - $262,478	-12,214 Reduced 6.43%	177,803 $3.38 Million
Q2 2021 Jul 15, 2021	BUY	$17.11 - $20.92 $509,364 - $622,788	29,770 Added 18.58%	190,017 $3.83 Million
Q1 2021 Apr 26, 2021	BUY	$17.21 - $20.65 $2.76 Million - $3.31 Million	160,247 New	160,247 $2.94 Million
Q1 2019 Apr 26, 2019	SELL	$19.46 - $25.28 $1.28 Million - $1.67 Million	-65,926 Closed	0 $0
Q4 2018 Jan 23, 2019	BUY	$17.72 - $22.51 $1.17 Million - $1.48 Million	65,926 New	65,926 $1.31 Million

Others Institutions Holding AMPH

# of Institutions

257

Shares Held

33.8M

Call Options Held

20.8K

Put Options Held

11.6K

View Full List

About Amphastar Pharmaceuticals, Inc.

Ticker AMPH
Exchange NASDAQ
Sector Healthcare
Industry Drug Manufacturers—Specialty & Generic
Shares Outstandng 49,015,200
Market Cap $1.1B
Description
Amphastar Pharmaceuticals, Inc., a bio-pharmaceutical company, develops, manufactures, markets, and sells generic and proprietary injectable, inhalation, and intranasal products in the United States, China, and France. The company operates through two segments, Finished Pharmaceutical Products and API. It offers Primatene Mist, an over-the-count...

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Assenagon Asset Management S.A. Amphastar Pharmaceuticals, Inc. Transaction History