Comparable stake leader
BAKER BROS. ADVISORS LP
SEC ownership of Kodiak Sciences Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001468748.
Disclosed value leader
BAKER BROS. ADVISORS LP
Comparable rows
50/50
Latest evidence
31 Mar 2026
- Public ticker
- KOD on Nasdaq
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BAKER BROS. ADVISORS LP
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BAKER BROS. ADVISORS LP
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
31 Mar 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001468748
- Issuer location
- Palo Alto, 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 Kodiak 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
BAKER BROS. ADVISORS LP
Disclosed value leader
BAKER BROS. ADVISORS LP
Comparable rows
50/50
Latest evidence
31 Mar 2026
13F
13D/G
3/4/5
Lead comparable stake: 33%
13D/G row: BAKER BROS. ADVISORS LP
Showing 1-8 of 50 holder rows.
Quick read
BAKER BROS. ADVISORS LP leads the comparable SEC ownership view at 33%.
50 of 50 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 BAKER BROS. ADVISORS LP's linked filing trail.
Comparable ownership
Top 5
BAKER BROS. ADVISORS LP
33%
Victor Perlroth
9.9%
Sirenia Capital Management LP
5.7%
BlackRock, Inc.
5.3%
Point72 Asset Management, L.P.
1%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BAKER BROS. ADVISORS LP |
13F
13D/G
3/4/5
Company · Director, 10%+ Owner
|
33%
from 13D/G
|
$759,319,370
19,919,186 shares
|
— | 31 Mar 2026 |
| Victor Perlroth |
13D/G
3/4/5
D. VICTOR PERLROTH, M.D. · Chairman and CEO, Director, 10%+ Owner
|
9.9%
|
$176,074,839
6,504,427 shares
|
+$9,203,800 | 31 Dec 2025 |
| Sirenia Capital Management LP |
13D/G
|
5.7%
|
$146,615,250
3,495,000 shares
|
$0 | 31 Mar 2026 |
| BlackRock, Inc. |
13F
13D/G
Company
|
5.3%
from 13D/G
|
$150,013,713
3,935,302 shares
|
— | 31 Mar 2026 |
| Point72 Asset Management, L.P. |
13F
13D/G
Company
|
1%
from 13D/G
|
$17,524,641
459,723 shares
|
— | 31 Mar 2026 |
| STATE STREET CORP |
13F
Company
|
3.7%
|
$85,805,070
2,250,920 shares
|
— | 31 Mar 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
Company
|
3.3%
|
$77,741,000
2,039,350 shares
|
— | 31 Mar 2026 |
| BRAIDWELL LP |
13F
Company
|
3%
|
$69,327,510
1,818,665 shares
|
— | 31 Mar 2026 |
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
Net insider flow leans to buying over the last 12 months. Net value: +$57,779,511.
Buys
$60,000,008
Insiders: 1
Sells
$2,220,497
Insiders: 1
Net
+$57,779,511
Shares: +2,548,696
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 2,608,696
Shares: 60,000
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 30,000 | $0 | $1,023,009 | -$1,023,009 |
| 3-6 | 0 | 30,000 | $0 | $1,197,488 | -$1,197,488 |
| 6-9 | 2,608,696 | 0 | $60,000,008 | $0 | +$60,000,008 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-14 of 14 reporting-owner rows connected to Kodiak Sciences Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
14
Largest Forms 3/4/5 holder
BAKER BROS. ADVISORS LP
Net 12M change
+$57,779,511
Latest report
15 Jul 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| BAKER BROS. ADVISORS LP | Director, 10%+ Owner | $422,251,756 | +$60,000,008 | +17% | Filing P/S | 30 Jun 2026 |
| Victor Perlroth | Chairman and CEO, Director, 10%+ Owner | $66,979,242 | Mixed | 15 Jul 2026 | ||
| John A. Borgeson | Chief Financial Officer | $7,353,088 | -$2,220,497 | -23% | Mixed | 15 Jul 2026 |
| Bassil I. Dahiyat | Director | Mixed | 30 Jun 2026 | |||
| Jason Ehrlich | Chief Medical Officer and Chief Development Officer | Mixed | 24 Jun 2023 | |||
| Taiyin Yang | Director | Mixed | 30 Jun 2026 | |||
| Robert Profusek | Director | Mixed | 30 Jun 2026 | |||
| Charles A. Bancroft | Director | Mixed | 30 Jun 2026 | |||
| 667, L.P. | Director, 10%+ Owner | Mixed | 30 Jun 2026 | |||
| Baker Bros. Advisors (GP) LLC | Director, 10%+ Owner | Mixed | 30 Jun 2026 | |||
| Baker Brothers Life Sciences LP | Director, 10%+ Owner | Mixed | 30 Jun 2026 | |||
| Felix Baker | Director, 10%+ Owner | Mixed | 30 Jun 2026 | |||
| Julian C. Baker | Director, 10%+ Owner | Mixed | 30 Jun 2026 | |||
| Richard S. Levy | Director | Mixed | 30 Jun 2026 |
Recent insider transactions for Kodiak 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| John A. Borgeson | KOD | Stock Option (Right to Buy) | Award | 66,500 | 66,500 | 15 Jul 2026 | Direct | |||
| Victor Perlroth | KOD | Stock Option (Right to Buy) | Award | 100,000 | 100,000 | 15 Jul 2026 | Direct | |||
| Taiyin Yang | KOD | Stock Option (Right to Buy) | Award | 17,731 | 17,731 | 30 Jun 2026 | Direct | |||
| Robert Profusek | KOD | Stock Option (Right to Buy) | Award | 17,731 | 17,731 | 30 Jun 2026 | Direct | |||
| Richard S. Levy | KOD | Stock Option (Right to Buy) | Award | 17,731 | 17,731 | 30 Jun 2026 | Direct | |||
| Bassil I. Dahiyat | KOD | Stock Option (Right to Buy) | Award | 17,731 | 17,731 | 30 Jun 2026 | Direct | |||
| Charles A. Bancroft | KOD | Stock Option (Right to Buy) | Award | 17,731 | 17,731 | 30 Jun 2026 | Direct | |||
| BAKER BROS. ADVISORS LP | KOD | Non-Qualified Stock Options (right to buy) | Award | 35,462 | 17,731 | 30 Jun 2026 | See Footnotes | |||
| BAKER BROS. ADVISORS LP | KOD | Non-Qualified Stock Options (right to buy) | Award | 35,462 | 17,731 | 30 Jun 2026 | See Footnotes | |||
| Baker Bros. Advisors Lp | KOD | Non-Qualified Stock Options (right to buy) | Award | 35,462 | 17,731 | 30 Jun 2026 | See Footnotes | |||
| Baker Bros. Advisors Lp | KOD | Non-Qualified Stock Options (right to buy) | Award | 35,462 | 17,731 | 30 Jun 2026 | See Footnotes | |||
| BAKER BROS. ADVISORS LP | KOD | Non-Qualified Stock Options (right to buy) | Award | 35,462 | 17,731 | 30 Jun 2026 | See Footnotes | |||
| Baker Bros. Advisors Lp | KOD | Non-Qualified Stock Options (right to buy) | Award | 35,462 | 17,731 | 30 Jun 2026 | See Footnotes | |||
| John A. Borgeson | KOD | Common Stock | Sale | -12.4% | $1,023,009 | $34.10 | -30,000 | 211,930 | 04 Jun 2026 | Direct |
| John A. Borgeson | KOD | Common Stock | Options Exercise | 14.2% | 30,000 | 241,930 | 04 Jun 2026 | Direct | ||
| John A. Borgeson | KOD | Stock Option (Right to Buy) | Options Exercise | -100% | -30,000 | 0 | 04 Jun 2026 | Direct | ||
| John A. Borgeson | KOD | Common Stock | Options Exercise | 15.6% | 28,614 | 211,930 | 15 Apr 2026 | Direct | ||
| John A. Borgeson | KOD | Stock Option (Right to Buy) | Options Exercise | -48.8% | -28,614 | 30,000 | 15 Apr 2026 | Direct | ||
| John A. Borgeson | KOD | Common Stock | Sale | -14.1% | $1,197,488 | $39.92 | -30,000 | 183,316 | 02 Apr 2026 | Direct |
| John A. Borgeson | KOD | Common Stock | Options Exercise | 16.4% | 30,000 | 213,316 | 02 Apr 2026 | Direct | ||
| John A. Borgeson | KOD | Stock Option (Right to Buy) | Options Exercise | -33.8% | -30,000 | 58,614 | 02 Apr 2026 | Direct | ||
| Victor Perlroth | KOD | Common Stock | Options Exercise | 14.3% | 300,000 | 2,395,538 | 25 Mar 2026 | Direct | ||
| Victor Perlroth | KOD | Stock Option (Right to Buy) | Options Exercise | -100% | -300,000 | 0 | 25 Mar 2026 | Direct | ||
| Victor Perlroth | KOD | Stock Option (Right to Buy) | Award | 175,000 | 175,000 | 18 Mar 2026 | Direct | |||
| D. Victor Perlroth | KOD | Common Stock | Gift | -0.59% | -12,500 | 2,095,538 | 26 Dec 2025 | Direct | ||
| Baker Bros. Advisors Lp | KOD | Common Stock | Purchase | 16.6% | $60,000,008 | $23.00 | 2,608,696 | 18,358,772 | 18 Dec 2025 | See Footnotes |
* marks a reported price that did not pass the local price check.