Rock Springs Capital Management LP

Position in LENZ — LENZ Therapeutics, Inc.

CIK 1595725 Baltimore, MD

Position in LENZ

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$1,462,372

-$893,387 QoQ

Shares Held

257,460

0.0% QoQ

Ownership

0.819%

of shares outstanding

% of Portfolio

0.07%

of 13F equity value

Holder Rank

#24

of 143 holders

Holding Since

Jun 2021

11 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

Rock Springs Capital Management LP holds $1,502,002,537 across 70 Biotechnology names. LENZ ranks #62 (0.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	RVMD	Revolution Medicines, Inc.	1,105,210	$206,983,728
2	TVTX	Travere Therapeutics, Inc.	2,179,069	$123,792,909
3	MDGL	Madrigal Pharmaceuticals, Inc.	174,999	$93,965,713
4	MIRM	Mirum Pharmaceuticals, Inc.	798,145	$93,438,835
5	RYTM	Rhythm Pharmaceuticals, Inc.	692,598	$76,899,155
6	KYMR	Kymera Therapeutics, Inc.	453,156	$51,963,398
7	ARGX	Argenx SE	52,750	$48,939,867
8	ASND	Ascendis Pharma A/S	168,750	$45,009,000

11 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$1,462,372	257,460	0.0%	Shares	Sole	2026-08-14
2026-03-31	$2,355,759	257,460	0.0%	Shares	Sole	2026-05-15
2025-12-31	$4,119,360	257,460	+9.0%	Shares	Sole	2026-02-17
2025-09-30	$11,003,453	236,227	+181.3%	Shares	Sole	2025-11-14
2025-06-30	$2,461,512	83,982	+1.1%	Shares	Sole	2025-08-14
2025-03-31	$2,136,038	83,082	+183.5%	Shares	Sole	2025-05-15
2024-12-31	$846,035	29,305	—	Shares	Sole	2025-02-14
2022-03-31 GRPH	—	1,790,754	-13.9%	Shares	Sole	2022-05-16
2021-12-31 GRPH	—	2,078,910	+0.1%	Shares	Sole	2022-02-14
2021-09-30 GRPH	—	2,076,710	-3.5%	Shares	Sole	2021-11-15
2021-06-30 GRPH	—	2,151,738	—	Shares	Sole	2021-08-16
No filing history on record for this holder in this stock.