Company · Ownership research

Zentalis Pharmaceuticals, Inc. ZNTL

CIK 0001725160 · CUSIP 98943L107

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 98943L107 (ZNTL), not CUSIP 98943L957 (ZNTL), CUSIP 98943L907 (ZNTL), and does not merge CUSIPs.

This page lists the top 20 of 87 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	5AM Venture Management, LLC CIK 1799883 · View history	$5.33M 3,947,913 shares	1.68%	+3.46M(+705.70%)Added	SEC filing ↗ Feb 17, 2026	▾
02	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$3.89M 2,883,745 shares	0.01%	+558.39K(+24.00%)Added	SEC filing ↗ Feb 12, 2026	▾
03	VANGUARD GROUP INC CIK 102909 · View history	$3.86M 2,855,590 shares	0.00%	-48.81K(-1.70%)Reduced	SEC filing ↗ Jan 29, 2026	▾
04	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$3.84M 2,849,294 shares	0.01%	+4.14K(+0.10%)Added	SEC filing ↗ Feb 10, 2026	▾
05	CITADEL ADVISORS LLC CIK 1423053 · View history	$2.65M 1,964,255 shares	0.00%	-113.03K(-5.40%)Reduced	SEC filing ↗ Feb 17, 2026	▾
06	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$2.24M 1,660,378 shares	0.00%	+251.57K(+17.90%)Added	SEC filing ↗ Feb 17, 2026	▾
07	TWO SIGMA ADVISERS, LP CIK 1478735 · View history	$2.00M 1,483,500 shares	0.00%	+22.30K(+1.50%)Added	SEC filing ↗ Feb 17, 2026	▾
08	TWO SIGMA INVESTMENTS, LP CIK 1179392 · View history	$1.99M 1,471,414 shares	0.00%	+108.07K(+7.90%)Added	SEC filing ↗ Feb 17, 2026	▾
09	Opaleye Management Inc. CIK 1595855 · Amended · View history	$1.89M 1,400,906 shares	0.25%	+1.08M(+342.60%)Added	SEC filing ↗ Apr 13, 2026	▾
10	BANK OF AMERICA CORP /DE/ CIK 70858 · View history	$1.85M 1,367,254 shares	0.00%	-181.53K(-11.70%)Reduced	SEC filing ↗ Feb 17, 2026	▾
11	Decheng Capital LLC CIK 2010850 · View history	$1.79M 1,323,327 shares	0.24%	0(0.00%)Unchanged	SEC filing ↗ Feb 12, 2026	▾
12	Ishara Investments LP CIK 2111609 · View history	$1.78M 1,320,000 shares	2.07%	—	SEC filing ↗ Feb 17, 2026	▾
13	BlackRock, Inc. CIK 2012383 · View history	$1.69M 1,249,968 shares	0.00%	+464(0.00%)Added	SEC filing ↗ Feb 12, 2026	▾
14	GSA CAPITAL PARTNERS LLP CIK 1362033 · View history	$1.58M 1,169,573 shares	0.14%	+91.92K(+8.50%)Added	SEC filing ↗ Feb 6, 2026	▾
15	PRIMECAP MANAGEMENT CO/CA/ CIK 763212 · View history	$1.29M 957,420 shares	0.00%	-5.20K(-0.50%)Reduced	SEC filing ↗ Feb 11, 2026	▾
16	Pfizer Inc CIK 78003 · View history	$1.29M 953,834 shares	0.54%	0(0.00%)Unchanged	SEC filing ↗ Feb 12, 2026	▾
17	MORGAN STANLEY CIK 895421 · Amended · View history	$1.08M 803,654 shares	0.00%	-604.17K(-42.90%)Reduced	SEC filing ↗ May 27, 2026	▾
18	Connor, Clark & Lunn Investment Management Ltd. CIK 1596800 · View history	$1.06M 787,055 shares	0.00%	+406.23K(+106.70%)Added	SEC filing ↗ Feb 10, 2026	▾
19	UBS Group AG CIK 1610520 · View history	$910.71K 674,598 shares	0.00%	+141.92K(+26.60%)Added	SEC filing ↗ Jan 29, 2026	▾
20	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$908.72K 673,129 shares	0.00%	-229.39K(-25.40%)Reduced	SEC filing ↗ Feb 17, 2026	▾

Showing 20 / 87 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

40,675,753

Not deduplicated across managers

Disclosed value

$55.04M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Zentalis Pharmaceuticals, Inc. · Q4 2025

Explore all 87 reporting institutions.

This page includes 20 of 87 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.