Document and Entity Information - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Mar. 19, 2026 |
Jun. 28, 2025 |
|
| Cover [Abstract] | |||
| Document Type | 10-K | ||
| Amendment Flag | false | ||
| Document Period End Date | Dec. 31, 2025 | ||
| Document Fiscal Period Focus | FY | ||
| Document Fiscal Year Focus | 2025 | ||
| Trading Symbol | KOD | ||
| Entity Registrant Name | KODIAK SCIENCES INC. | ||
| Entity Central Index Key | 0001468748 | ||
| Current Fiscal Year End Date | --12-31 | ||
| Entity Filer Category | Non-accelerated Filer | ||
| Entity File Number | 001-38682 | ||
| Entity Tax Identification Number | 27-0476525 | ||
| Entity Address, Address Line One | 1250 Page Mill Road | ||
| Entity Address, City or Town | Palo Alto | ||
| Entity Address, State or Province | CA | ||
| Entity Address, Postal Zip Code | 94304 | ||
| City Area Code | 650 | ||
| Local Phone Number | 281-0850 | ||
| Entity Incorporation, State or Country Code | DE | ||
| Entity Interactive Data Current | Yes | ||
| Document Annual Report | true | ||
| Document Transition Report | false | ||
| Title of 12(b) Security | Common stock, par value $0.0001 | ||
| Security Exchange Name | NASDAQ | ||
| Entity Well-known Seasoned Issuer | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Small Business | true | ||
| Entity Emerging Growth Company | false | ||
| Entity Shell Company | false | ||
| ICFR Auditor Attestation Flag | false | ||
| Document Financial Statement Error Correction Flag | false | ||
| Entity Common Stock, Shares Outstanding | 61,847,870 | ||
| Entity Public Float | $ 121.6 | ||
| Auditor Firm ID | 238 | ||
| Auditor Name | PricewaterhouseCoopers LLP | ||
| Auditor Location | San Jose, California | ||
| Documents Incorporated by Reference | DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrant’s definitive Proxy Statement relating to the 2026 Annual Meeting of Stockholders are incorporated herein by reference in Part III of this Annual Report on Form 10-K to the extent stated herein. The proxy statement will be filed with the Securities and Exchange Commission within 120 days of the registrant’s fiscal year ended December 31, 2025. |
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| Auditor Opinion | Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of Kodiak Sciences Inc. and its subsidiaries (the “Company”) as of December 31, 2025 and 2024, and the related consolidated statements of operations and comprehensive loss, of stockholders’ equity and of cash flows for each of the three years in the period ended December 31, 2025, including the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2025 in conformity with accounting principles generally accepted in the United States of America. |