Comparable stake leader
Equal Talent Investments Ltd
SEC ownership of Kezar Life Sciences, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001645666.
Disclosed value leader
Morningside Venture Investments Ltd
Comparable rows
2/8
Latest evidence
31 Dec 2025
- Public ticker
- KZR on Nasdaq
- Parsed ownership sources
-
13D/G and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Equal Talent Investments Ltd
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
2 of 8
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Equal Talent Investments Ltd
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
31 Dec 2025
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001645666
- Issuer location
- South San Francisco, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Kezar Life Sciences, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Equal Talent Investments Ltd
Disclosed value leader
Morningside Venture Inves...
Comparable rows
2/8
Latest evidence
31 Dec 2025
13D/G
3/4/5
Lead comparable stake: 8.7%
6 rows are not safely comparable across share classes.
13D/G row: Equal Talent Investments Ltd
Quick read
Equal Talent Investments Ltd leads the comparable SEC ownership view at 8.7%.
2 of 8 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Equal Talent Investments Ltd's linked filing trail.
Comparable ownership
Top 2
Equal Talent Investments Ltd
8.7%
Stonepine Capital Management, LLC
2.1%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 8 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Equal Talent Investments Ltd |
13D/G
Equal Talent Investments Limited
|
8.7%
|
$487,037
616,502 shares
|
$0 | 28 Feb 2025 |
| Stonepine Capital Management, LLC |
13D/G
|
2.1%
|
$968,310
156,179 shares
|
-$1,370,578 | 31 Dec 2025 |
| Morningside Venture Investments Ltd |
3/4/5
13D/G
10%+ Owner · Morningside Venture Investments Limited
|
—
class O/S missing
|
$1,753,194
1,947,993 shares
|
— | 15 Aug 2023 |
| Nicholas Michael Mordwinkin |
3/4/5
Chief Business Officer
|
—
class O/S missing
|
—
275,000 shares
|
— | 07 Jan 2024 |
| Noreen Henig |
3/4/5
Chief Medical Officer
|
—
class O/S missing
|
—
220,000 shares
|
— | 24 Jul 2023 |
| Jason Dinges |
3/4/5
Director
|
—
class O/S missing
|
—
26,000 shares
|
— | 28 Jun 2021 |
| Jean-Pierre Sommadossi |
3/4/5
Director
|
—
class O/S missing
|
—
26,000 shares
|
— | 28 Jun 2021 |
| Zung Phuong To |
3/4/5
Chief Development Officer
|
—
class O/S missing
|
—
7,000 shares
|
— | 01 Jul 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 25 Aug 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-17 of 17 reporting-owner rows connected to Kezar Life Sciences, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
17
Largest Forms 3/4/5 holder
Morningside Venture Investments Ltd
Net 12M change
$0
Latest report
11 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Morningside Venture Investments Ltd | 10%+ Owner | $1,753,194 | Mixed | 15 Aug 2023 | ||
| Franklin M. Berger | Director | $0 | Mixed | 11 May 2026 | ||
| John Franklin Fowler | Director | $0 | Mixed | 11 May 2026 | ||
| Michael Kauffman | Director | $0 | Mixed | 11 May 2026 | ||
| Mark C. Schiller | Chief Operating Officer | $0 | Mixed | 11 May 2026 | ||
| Christopher J. Kirk | CEO, Director | $0 | Mixed | 11 May 2026 | ||
| Marc Belsky | Chief Financial Officer | $0 | Mixed | 11 May 2026 | ||
| Pichi Luo Chiang | SVP, Corporate Controller | $0 | Mixed | 11 May 2026 | ||
| Jean-Pierre Sommadossi | Director | Mixed | 28 Jun 2021 | |||
| Graham K. Cooper | Director | Mixed | 11 May 2026 | |||
| Elizabeth Garner | Director | Mixed | 11 May 2026 | |||
| Zung Phuong To | Chief Development Officer | Mixed | 01 Jul 2025 | |||
| Noreen Henig | Chief Medical Officer | Mixed | 24 Jul 2023 | |||
| Jason Dinges | Director | Mixed | 28 Jun 2021 | |||
| Courtney Wallace | Director | Mixed | 11 May 2026 | |||
| Nicholas Michael Mordwinkin | Chief Business Officer | Mixed | 07 Jan 2024 | |||
| Micki Klearman | Director | Mixed | 11 May 2026 |
Recent insider transactions for Kezar Life Sciences, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Courtney Wallace | KZR | Stock Option (right to buy) | Disposed to Issuer | -100% | -16,300 | 0 | 11 May 2026 | Direct | ||
| Mark C. Schiller | KZR | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -2,739 | 0 | 11 May 2026 | Direct | ||
| Mark C. Schiller | KZR | Employee Stock Option (right to buy) | Disposed to Issuer | -100% | -114,745 | 0 | 11 May 2026 | Direct | ||
| Micki Klearman | KZR | Stock Option (right to buy) | Disposed to Issuer | -100% | -16,300 | 0 | 11 May 2026 | Direct | ||
| Christopher J. Kirk | KZR | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -43,134 | 0 | 11 May 2026 | Direct | ||
| Christopher J. Kirk | KZR | Employee Stock Option (right to buy) | Disposed to Issuer | -100% | -328,997 | 0 | 11 May 2026 | Direct | ||
| Michael Kauffman | KZR | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -6,369 | 0 | 11 May 2026 | Direct | ||
| Michael Kauffman | KZR | Stock Option (right to buy) | Disposed to Issuer | -100% | -12,378 | 0 | 11 May 2026 | Direct | ||
| Graham K. Cooper | KZR | Stock Option (right to buy) | Disposed to Issuer | -100% | -15,731 | 0 | 11 May 2026 | Direct | ||
| Elizabeth Garner | KZR | Stock Option (right to buy) | Disposed to Issuer | -100% | -13,768 | 0 | 11 May 2026 | Direct | ||
| Franklin M. Berger | KZR | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -89,069 | 0 | 11 May 2026 | Direct | ||
| Franklin M. Berger | KZR | Stock Option (right to buy) | Disposed to Issuer | -100% | -11,100 | 0 | 11 May 2026 | Direct | ||
| John Franklin Fowler | KZR | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -3,846 | 0 | 11 May 2026 | By Montebello Holdings LLC | ||
| John Franklin Fowler | KZR | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -375 | 0 | 11 May 2026 | By Trust | ||
| John Franklin Fowler | KZR | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -39,390 | 0 | 11 May 2026 | Direct | ||
| John Franklin Fowler | KZR | Stock Option (right to buy) | Disposed to Issuer | -100% | -324,317 | 0 | 11 May 2026 | Direct | ||
| Marc Belsky | KZR | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -200 | 0 | 11 May 2026 | By Trust | ||
| Marc Belsky | KZR | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -1,538 | 0 | 11 May 2026 | Direct | ||
| Marc Belsky | KZR | Employee Stock Option (right to buy) | Disposed to Issuer | -100% | -154,287 | 0 | 11 May 2026 | Direct | ||
| Pichi Luo Chiang | KZR | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -2,711 | 0 | 11 May 2026 | Direct | ||
| Pichi Luo Chiang | KZR | Employee Stock Option (right to buy) | Disposed to Issuer | -100% | -72,147 | 0 | 11 May 2026 | Direct |
* marks a reported price that did not pass the local price check.