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Kezar Life Sciences, Inc. (KZR) institutional ownership

Market cap$51M SectorHealthcare
Funds holding · Q4 2025
1
reported KZR position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q4 2025
Activity unavailable N/A
0 buyers · 1 sellers

Kezar Life Sciences, Inc. (KZR) price and institutional activity

Dates

Q4 2025

$0 bought by 0 investors
$0 sold by 1 investors
Barclays PLC
Bought Sold Totals per quarter; hover a bar for the names.

Kezar Life Sciences, Inc. (KZR) institutional activity · 1

Investor Type Est. change Change Δ Own Date
Barclays PLC · Exited
Change −1 Δ Own −100.0% Date Q4 2025
Barclays PLC Exited· Q4 2025 −1 −100.0% Q4 2025
Data through Q4 2025 · filed Mar 19, 2026
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Famous investor activity in Kezar Life Sciences, Inc. (KZR)

Kezar Life Sciences, Inc. (KZR) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Wallace Courtney · Director 5 operations -21K
Owned 0 Trade date May 11, 2026 Filed date May 11, 2026
Wallace Courtney Director 5 operations -21K 0 May 11, 2026 May 11, 2026
Schiller Mark C. · Officer Other Form 4 events -3K
Owned 0 Trade date May 11, 2026 Filed date May 11, 2026
Schiller Mark C. Officer Other Form 4 events -3K 0 May 11, 2026 May 11, 2026
Schiller Mark C. · Officer 9 operations -115K
Owned 0 Trade date May 11, 2026 Filed date May 11, 2026
Schiller Mark C. Officer 9 operations -115K 0 May 11, 2026 May 11, 2026
Klearman Micki · Director 6 operations -24K
Owned 0 Trade date May 11, 2026 Filed date May 11, 2026
Klearman Micki Director 6 operations -24K 0 May 11, 2026 May 11, 2026
Kirk Christopher J. · Director Other Form 4 events -43K
Owned 0 Trade date May 11, 2026 Filed date May 11, 2026
Kirk Christopher J. Director Other Form 4 events -43K 0 May 11, 2026 May 11, 2026
Kirk Christopher J. · Director 11 operations -329K
Owned 0 Trade date May 11, 2026 Filed date May 11, 2026
Kirk Christopher J. Director 11 operations -329K 0 May 11, 2026 May 11, 2026
Kauffman Michael · Director Other Form 4 events -6K
Owned 0 Trade date May 11, 2026 Filed date May 11, 2026
Kauffman Michael Director Other Form 4 events -6K 0 May 11, 2026 May 11, 2026
Kauffman Michael · Director 8 operations -21K
Owned 0 Trade date May 11, 2026 Filed date May 11, 2026
Kauffman Michael Director 8 operations -21K 0 May 11, 2026 May 11, 2026
Cooper Graham K. · Director 10 operations -28K
Owned 0 Trade date May 11, 2026 Filed date May 11, 2026
Cooper Graham K. Director 10 operations -28K 0 May 11, 2026 May 11, 2026
Garner Elizabeth · Director 7 operations -21K
Owned 0 Trade date May 11, 2026 Filed date May 11, 2026
Garner Elizabeth Director 7 operations -21K 0 May 11, 2026 May 11, 2026
Berger Franklin M. · Director Other Form 4 events -89K
Owned 0 Trade date May 11, 2026 Filed date May 11, 2026
Berger Franklin M. Director Other Form 4 events -89K 0 May 11, 2026 May 11, 2026
Berger Franklin M. · Director 5 operations -19K
Owned 0 Trade date May 11, 2026 Filed date May 11, 2026
Berger Franklin M. Director 5 operations -19K 0 May 11, 2026 May 11, 2026
Fowler John Franklin · Director 3 operations -44K
Owned 0 Trade date May 11, 2026 Filed date May 11, 2026
Fowler John Franklin Director 3 operations -44K 0 May 11, 2026 May 11, 2026
Fowler John Franklin · Director 11 operations -329K
Owned 0 Trade date May 11, 2026 Filed date May 11, 2026
Fowler John Franklin Director 11 operations -329K 0 May 11, 2026 May 11, 2026
Belsky Marc · CFO 2 operations -2K
Owned 0 Trade date May 11, 2026 Filed date May 11, 2026
Belsky Marc CFO 2 operations -2K 0 May 11, 2026 May 11, 2026
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15 of 18 Sign in to continue to older insider transactions.

Kezar Life Sciences, Inc. (KZR) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Prosight Management, LP 4.1M
% of shares outstanding 5.8% Filing date Apr 21, 2023
Prosight Management, LP 4.1M 5.8% Apr 21, 2023
Barclays PLC 3.8M
% of shares outstanding 5.3% Filing date Feb 14, 2024
Barclays PLC 3.8M 5.3% Feb 14, 2024
Millennium Management LLC 3.8M
% of shares outstanding 5.2% Filing date Jun 21, 2023
Millennium Management LLC 3.8M 5.2% Jun 21, 2023
Orbimed Advisors LLC 3.5M
% of shares outstanding 5.1% Filing date Feb 14, 2023
Orbimed Advisors LLC 3.5M 5.1% Feb 14, 2023
Suvretta Capital Management, LLC 3.5M
% of shares outstanding 5.1% Filing date Feb 13, 2023
Suvretta Capital Management, LLC 3.5M 5.1% Feb 13, 2023
Bb Biotech AG 3.0M
% of shares outstanding 4.4% Filing date Feb 14, 2023
Bb Biotech AG 3.0M 4.4% Feb 14, 2023
Logos Global Management LP 1.4M
% of shares outstanding 3.0% Filing date Feb 14, 2022
Logos Global Management LP 1.4M 3.0% Feb 14, 2022
Stonepine Capital Management, LLC 156K
% of shares outstanding 2.1% Filing date Feb 13, 2026
Stonepine Capital Management, LLC 156K 2.1% Feb 13, 2026
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Kezar Life Sciences, Inc. (KZR) ownership FAQ

Who owns KZR?

1 reporting institutions disclosed KZR position changes in the Q4 2025 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q4 2025.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.