Rock Springs Capital Management LP Zai Lab LTD Transaction History

Rock Springs Capital Management LP

$1.5 Billion
Q3 2025

A detailed history of Rock Springs Capital Management LP transactions in Zai Lab LTD stock. As of the latest transaction made, Rock Springs Capital Management LP holds 791,193 shares of ZLAB stock, worth $17.2 Million. This represents 1.79% of its overall portfolio holdings.

Number of Shares

791,193

Previous 871,392 9.2%

Holding current value

$17.2 Million

Previous $30.5 Million 12.01%

% of portfolio

1.79%

Previous 2.07%

30 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	SELL	$28.4 - $40.51 $2.28 Million - $3.25 Million	-80,199 Reduced 9.2%	791,193 $26.8 Million
Q2 2025 Aug 14, 2025	SELL	$24.32 - $43.03 $807,424 - $1.43 Million	-33,200 Reduced 3.67%	871,392 $30.5 Million
Q1 2025 May 15, 2025	SELL	$24.29 - $38.35 $9.73 Million - $15.4 Million	-400,745 Reduced 30.7%	904,592 $32.7 Million
Q4 2024 Feb 14, 2025	SELL	$24.61 - $33.18 $254,368 - $342,948	-10,336 Reduced 0.79%	1,305,337 $34.2 Million
Q3 2024 Nov 14, 2024	BUY	$16.25 - $24.14 $289,250 - $429,692	17,800 Added 1.37%	1,315,673 $31.8 Million

Q2 2024 Aug 14, 2024	BUY	$13.72 - $21.55 $10,290 - $16,162	750 Added 0.06%	1,297,873 $22.5 Million
Q1 2024 May 15, 2024	BUY	$15.95 - $26.8 $2.55 Million - $4.29 Million	160,100 Added 14.08%	1,297,123 $20.8 Million
Q4 2023 Feb 14, 2024	SELL	$22.97 - $30.58 $2.3 Million - $3.06 Million	-100,000 Reduced 8.08%	1,137,023 $31.1 Million
Q3 2023 Nov 14, 2023	BUY	$22.72 - $31.49 $331,712 - $459,754	14,600 Added 1.19%	1,237,023 $30.1 Million
Q2 2023 Aug 14, 2023	BUY	$25.3 - $39.67 $4.12 Million - $6.46 Million	162,723 Added 15.36%	1,222,423 $33.9 Million
Q4 2022 Feb 14, 2023	SELL	$22.28 - $38.71 $2.96 Million - $5.14 Million	-132,700 Reduced 11.13%	1,059,700 $32.5 Million
Q3 2022 Nov 14, 2022	SELL	$34.2 - $51.69 $803,700 - $1.21 Million	-23,500 Reduced 1.93%	1,192,400 $40.8 Million
Q2 2022 Aug 15, 2022	BUY	$23.14 - $49.68 $231,400 - $496,800	10,000 Added 0.83%	1,215,900 $42.2 Million
Q1 2022 May 16, 2022	BUY	$27.77 - $64.4 $699,804 - $1.62 Million	25,200 Added 2.13%	1,205,900 $53 Million
Q4 2021 Feb 14, 2022	BUY	$54.9 - $105.21 $5.65 Million - $10.8 Million	102,950 Added 9.55%	1,180,700 $74.2 Million
Q3 2021 Nov 15, 2021	BUY	$105.0 - $178.37 $6.69 Million - $11.4 Million	63,750 Added 6.29%	1,077,750 $114 Million
Q2 2021 Aug 16, 2021	BUY	$125.11 - $180.0 $10.1 Million - $14.5 Million	80,500 Added 8.62%	1,014,000 $179 Million
Q1 2021 May 17, 2021	BUY	$126.27 - $191.71 $9.92 Million - $15.1 Million	78,601 Added 9.19%	933,500 $125 Million
Q4 2020 Feb 16, 2021	BUY	$81.94 - $135.34 $2.57 Million - $4.25 Million	31,372 Added 3.81%	854,899 $116 Million
Q3 2020 Nov 16, 2020	BUY	$73.3 - $89.48 $753,597 - $919,943	10,281 Added 1.26%	823,527 $68.5 Million
Q2 2020 Aug 14, 2020	BUY	$48.82 - $82.53 $3.09 Million - $5.22 Million	63,246 Added 8.43%	813,246 $66.8 Million
Q1 2020 May 15, 2020	BUY	$39.1 - $62.9 $4.89 Million - $7.86 Million	125,000 Added 20.0%	750,000 $38.6 Million
Q4 2019 Feb 14, 2020	BUY	$29.79 - $43.06 $1.49 Million - $2.15 Million	50,000 Added 8.7%	625,000 $26 Million
Q3 2019 Nov 14, 2019	BUY	$30.47 - $37.65 $761,750 - $941,250	25,000 Added 4.55%	575,000 $18.6 Million
Q2 2019 Aug 14, 2019	BUY	$25.73 - $35.79 $3.51 Million - $4.89 Million	136,600 Added 33.04%	550,000 $19.2 Million
Q1 2019 May 15, 2019	BUY	$21.71 - $31.54 $1.38 Million - $2 Million	63,400 Added 18.11%	413,400 $12.2 Million
Q3 2018 Nov 14, 2018	BUY	$17.8 - $25.35 $890,000 - $1.27 Million	50,000 Added 16.67%	350,000 $6.82 Million
Q2 2018 Aug 14, 2018	BUY	$18.0 - $25.01 $90,000 - $125,050	5,000 Added 1.69%	300,000 $6.98 Million
Q4 2017 Feb 14, 2018	SELL	$21.23 - $34.09 $371,525 - $596,575	-17,500 Reduced 5.6%	295,000 $6.26 Million
Q3 2017 Nov 14, 2017	BUY	$27.0 - $31.11 $8.44 Million - $9.72 Million	312,500	312,500 $8.44 Million

Others Institutions Holding ZLAB

# of Institutions

154

Shares Held

32.7M

Call Options Held

168K

Put Options Held

222K

View Full List

About Zai Lab Ltd

Ticker ZLAB
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Shares Outstandng 97,908,704
Market Cap $2.13B
Description
Zai Lab Limited develops and commercializes therapies to treat oncology, autoimmune disorders, infectious diseases, and neuroscience primarily in Mainland China and Hong Kong. The company's commercial products include Zejula, a once-daily small-molecule poly polymerase 1/2 inhibitor; Optune, a device that delivers tumor treating fields; NUZYRA f...

More about ZLAB

Track This Portfolio

Portfolio Update

Get notified when there are updates to the investment portfolio of Rock Springs Capital Management LP, based on Form 13F filings with the SEC.

News

Stay updated on Rock Springs Capital Management LP with notifications on news.

Account

Rock Springs Capital Management LP Zai Lab LTD Transaction History