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Beneficial Ownership Report · SCHEDULE 13D/A

Kodiak Sciences Inc

KODNASDAQEQUITYCurrent

Beneficial Ownership Report

Filed Sep 30, 2026Accepted Sep 30, 2026, 4:39 PM EDTFiling CIK 1468748Accession 0001104659-26-112371
Share

Structured filing — SCHEDULE 13D/A

primary_doc.xml

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Amendment · This filing reports the amendment as submitted.

Subject company

Company
Kodiak Sciences Inc.
Company CIK
0001468748
Street
1250 Page Mill Road
City
Palo Alto
State / country code
CA
Postal code
94304

Statement details

Amendment number
12
Security class
Common Stock, $0.0001 par value per share
Event date
09/28/2026
Previously filed indication
false

Authorized notification person 1

Name
Alexandra A. Toohey, CFO
Phone
212-339-5690
Street
860 Washington Street, 3rd Floor
City
New York
State / country code
NY
Postal code
10014

Reporting person 1

Name
Baker Bros. Advisors LP
Reporting person CIK
0001263508
No reporting person CIK indication
N
Citizenship / organization
DE
Reporting person type
IA · PN
Source of funds code
OO
Legal proceedings indication
N
Aggregate amount owned
22,049,297.00
Percent of class
35.0
Sole voting power
22,049,297.00
Shared voting power
0.00
Sole dispositive power
22,049,297.00
Shared dispositive power
0.00
Aggregate excludes certain shares
N

Reporting person 2

Name
Baker Bros. Advisors (GP) LLC
Reporting person CIK
0001580575
No reporting person CIK indication
N
Citizenship / organization
DE
Reporting person type
HC · OO
Source of funds code
OO
Legal proceedings indication
N
Aggregate amount owned
22,049,297.00
Percent of class
35.0
Sole voting power
22,049,297.00
Shared voting power
0.00
Sole dispositive power
22,049,297.00
Shared dispositive power
0.00
Aggregate excludes certain shares
N

Reporting person 3

Name
Julian C. Baker
Reporting person CIK
0001087939
No reporting person CIK indication
N
Citizenship / organization
X1
Reporting person type
IN · HC
Source of funds code
OO
Legal proceedings indication
N
Aggregate amount owned
22,049,297.00
Percent of class
35.0
Sole voting power
22,049,297.00
Shared voting power
0.00
Sole dispositive power
22,049,297.00
Shared dispositive power
0.00
Aggregate excludes certain shares
N

Reporting person 4

Name
Felix J. Baker
Reporting person CIK
0001087940
No reporting person CIK indication
N
Citizenship / organization
X1
Reporting person type
IN · HC
Source of funds code
OO
Legal proceedings indication
N
Aggregate amount owned
22,049,297.00
Percent of class
35.0
Sole voting power
22,049,297.00
Shared voting power
0.00
Sole dispositive power
22,049,297.00
Shared dispositive power
0.00
Aggregate excludes certain shares
N

Item 1

Issuer

Kodiak Sciences Inc.

Security title

Common Stock, $0.0001 par value per share

Principal address

Comment

This Amendment No. 12 to Schedule 13D amends and supplements the previously filed Schedule 13D filed by Baker Bros. Advisors LP (the "Adviser"), Baker Bros. Advisors (GP) LLC (the "Adviser GP"), Julian C. Baker and Felix J. Baker (collectively, the "Reporting Persons"). Except as supplemented herein, such statements, as heretofore amended and supplemented, remain in full force and effect. The Adviser GP is the sole general partner of the Adviser. Pursuant to management agreements, as amended, among the Adviser, Baker Brothers Life Sciences, L.P. ("Life Sciences") and 667, L.P. ("667", and together with Life Sciences, the "Funds"), and their respective general partners, the Funds' respective general partners relinquished to the Adviser all discretion and authority with respect to the investment and voting power of the securities held by the Funds, and thus the Adviser has complete and unlimited discretion and authority with respect to the Funds' investments and voting power over investments. All capitalized terms contained herein but not otherwise defined shall have the meanings ascribed to such terms in the Schedule 13D, as amended. Information given in response to each item shall be deemed incorporated by reference in all other items, as applicable.

Item 3

Source of funds

Item 3 of Schedule 13D is supplemented and amended, as the case may be, as follows: The disclosure in Item 5 below is incorporated herein by reference.

Item 4

Purpose of transaction

Item 4 of Schedule 13D is supplemented and amended, as the case may be, as follows: The disclosures in Item 5 below are incorporated herein by reference. This Amendment No. 12 is being filed to report the acquisition of common stock ("Common Stock") of Kodiak Sciences Inc. (the "Issuer") reported in Item 5(c) that resulted in a more than 1 percent change in beneficial ownership. The disclosure regarding the purchases in Item 5(c) below is incorporated herein by reference. The Funds hold securities of the Issuer for investment purposes. The Reporting Persons or their affiliates may purchase additional securities or dispose of securities in varying amounts and at varying times depending upon the Reporting Persons' continuing assessments of pertinent factors, including the availability of shares of Common Stock or other securities for purchase at particular price levels, the business prospects of the Issuer, other business investment opportunities, economic conditions, stock market conditions, money market conditions, the attitudes and actions of the board of directors of the Issuer (the "Board") and management of the Issuer, the availability and nature of opportunities to dispose of securities of the Issuer and other plans and requirements of the particular entities. The Reporting Persons may discuss items of mutual interest with the Issuer's management, other members of the Board and other investors, which could include items in subparagraphs (a) through (j) of Item 4 of Schedule 13D. Depending upon their assessments of the above factors, the Reporting Persons or their affiliates may change their present intentions as stated above and they may assess whether to make suggestions to the management of the Issuer regarding financing, and whether to acquire additional securities of the Issuer, including shares of Common Stock (by means of open market purchases, privately negotiated purchases, exercise of some or all of the Stock Options (as defined below) to purchase Common Stock of the Issuer) or to dispose of some or all of the securities of the Issuer, including shares of Common Stock, under their control. Except as otherwise disclosed herein, at the present time, the Reporting Persons do not have any plans or proposals with respect to any extraordinary corporate transaction involving the Issuer including, without limitation, those matters described in subparagraphs (a) through (j) of Item 4 of Schedule 13D.

Item 5

Number of shares

Items 7 through 10 of each of the cover pages of this Amendment No. 12 are incorporated herein by reference. The disclosure in Item 5(a) is incorporated herein by reference. The direct holdings of the Funds are detailed in Exhibit 99.1, which is incorporated herein by reference. Felix J. Baker, a managing member of the Adviser GP, currently serves on the Board. He is Chair of the Compensation Committee and serves on the Nominating/Governance Committee. Felix J. Baker, as compensation for his service on the Board, receives Stock Options. Felix J. Baker holds 24,747 vested Stock Options that have an exercise price of $10.13 per share expiring June 2, 2029, 4,135 vested Stock Options that have an exercise price of $62.50 per share expiring June 7, 2030, 7,106 vested Stock Options that have an exercise price of $54.12 per share expiring June 29, 2030, 7,368 vested Stock Options that have an exercise price of $93.00 per share expiring June 29, 2031, 25,000 vested Stock Options that have an exercise price of $7.64 per share expiring June 29, 2032, 40,000 vested Stock Options that have an exercise price of $6.90 per share expiring June 29, 2033, 40,000 vested Stock Options that have an exercise price of $2.35 per share expiring June 27, 2034, 40,000 vested Stock Options that have an exercise price of $3.73 per share expiring June 29, 2035, and 17,731 options to purchase 17,731 shares of Common Stock which were granted on June 30, 2026, that have an exercise price of $38.96 per share expiring June 29, 2036, which will vest on the earlier of June 30, 2027 or one day prior to the next annual meeting of the Issuer's stockholders. The policies of the Funds and the Adviser do not permit managing members of the Adviser GP to receive compensation for serving as a director of the Issuer, and the Funds are instead entitled to the pecuniary interest in any compensation received for Felix J. Baker's service on the Board. The Adviser, the Adviser GP, and Felix J. Baker and Julian C. Baker as managing members of the Adviser GP, may be deemed to have the power to vote or direct the vote of and the power to dispose or direct the disposition of the Stock Options held by Felix J. Baker disclosed herein and in previous amendments to this Schedule 13D. The Adviser GP, Felix J. Baker and Julian C. Baker as managing members of the Adviser GP, and the Adviser may be deemed to be beneficial owners of securities of the Issuer directly held by the Funds.

Transactions

The transactions in Common Stock detailed in Exhibit 99.2 were effected by the Adviser on behalf of the Funds during the sixty days preceding the filing of this statement. All transactions were effected in the over-the-counter market directly with a broker-dealer. Except as disclosed herein, none of the Reporting Persons or their affiliates has effected any other transactions in securities of the Issuer during the past sixty days.

Other persons with an interest

Certain securities of the Issuer are held directly by 667, a limited partnership the sole general partner of which is Baker Biotech Capital, L.P., a limited partnership the sole general partner of which is Baker Biotech Capital (GP), LLC. Julian C. Baker and Felix J. Baker are the managing members of Baker Biotech Capital (GP), LLC. Certain securities of the Issuer are held directly by Life Sciences, a limited partnership the sole general partner of which is Baker Brothers Life Sciences Capital, L.P., a limited partnership the sole general partner of which is Baker Brothers Life Sciences Capital (GP), LLC. Julian C. Baker and Felix J. Baker are the managing members of Baker Brothers Life Sciences Capital (GP), LLC.

Date ownership ceased to exceed 5%

Not applicable.

Percentage of class

The disclosures in the Reporting Persons' cover pages and in Item 4 are incorporated by reference herein. Items 7 through 11 and 13 of each of the cover pages of this Amendment No. 12 are incorporated herein by reference. The percentage of beneficial ownership for each of the Reporting Persons reported herein is based on 62,849,457 shares of Common Stock outstanding as of August 6, 2026 as reported in the Issuer's Form 10-Q filed with the Securities and Exchange Commission ("SEC") on August 13, 2026 plus 188,356 vested non-qualified options exercisable for 188,356 shares of Common Stock ("Stock Options") received by Felix J. Baker as compensation for his service on the Board. Set forth in Exhibit 99.1 is the aggregate number of shares of Common Stock directly held by each of the Funds, which may be deemed to be indirectly beneficially owned by the Reporting Persons along with the percentage of Common Stock held by each of the Funds.

Item 7

Filed exhibits

99.1 Holding by the Funds in Securities of the Issuer 99.2 Item 5(c) Transactions in Common Stock

Signature 1

Reporting person
Baker Bros. Advisors LP
Signed
/s/ Scott L. Lessing
Title
Scott L. Lessing/ President By: Baker Bros. Advisors (GP) LLC, its general partner
Date
09/30/2026

Signature 2

Reporting person
Baker Bros. Advisors (GP) LLC
Signed
/s/ Scott L. Lessing
Title
Scott L. Lessing/ President
Date
09/30/2026

Signature 3

Reporting person
Julian C. Baker
Signed
/s/ Julian C. Baker
Title
Julian C. Baker
Date
09/30/2026

Signature 4

Reporting person
Felix J. Baker
Signed
/s/ Felix J. Baker
Title
Felix J. Baker
Date
09/30/2026

Filed exhibits

Company context

Kodiak (NASDAQ: KOD) is a precommercial biotechnology company and a leader in retinal medicines development. We plan to file a biologics license application (BLA) for Zenkuda in the fourth quarter of 2026. We believe Zenkuda is a potential new first-in-class investigational therapy for patients with wet age-related macular degeneration (wAMD), diabetic retinopathy (DR) and macular edema following retinal vein occlusion (RVO). In the recent DAYBREAK Phase 3 study comparing Zenkuda with standard of care aflibercept, patients treated with Zenkuda showed strong immediacy of clinical effect through the loading phase, comparable vision gains and fluid control through the one-year primary endpoint, with a majority of patients treated on an every 6 month dosing interval using a strict treat-to-dryness real world retreatment approach. We also remain on track to announce topline data in December 2026 for KSI-101 in the Phase 3 PEAK study in patients with macular edema secondary to inflammation (MESI), in which KSI-101 is being evaluated for superiority against sham-treated patients. We are planning to file a BLA for KSI-101 in the second quarter of 2027. Looking to Zenkuda and KSI-101, we have the potential to receive marketing authorization for two retinal medicines by the end of calendar year 2027 or early 2028. Additionally, we continue to accelerate our development plan for tabirafusp-ted in the currently enrolling ALTO Phase 3 study exploring the potential for tabirafusp-ted, our

Current securities

Recent company filings

  1. Other EventsSep 28, 2026
  2. 10-Q filingAug 13, 2026
  3. Results of Operations and Financial ConditionAug 13, 2026
  4. 4 filingJul 2, 2026
  5. 4 filingJul 2, 2026

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