Baker Bros.' massive two-day accumulation at prices up to $90 per share represents a strong vote of confidence. With 35% ownership and a board seat, they have significant influence. Watch for potential strategic initiatives, including possible M&A or pipeline acceleration, as the fund's conviction is now backed by a very large incremental investment.
Price Chart
Executive Summary
Baker Bros. Advisors LP filed Amendment No. 12 to its Schedule 13D for Kodiak Sciences Inc., reporting a massive open-market purchase of 2,204,929 shares on September 28-29, 2026, at prices ranging from ~$60.50 to $90.00 per share. The filing increases the group's beneficial ownership from a prior level to 22,049,297 shares (35.0% of outstanding common stock), up from 34.8% reported in the prior amendment. This is a significant escalation of Baker Bros.' already dominant position, signaling strong conviction in Kodiak's prospects.
Key Financial Metrics
Key Facts
- Baker Bros. Advisors LP and affiliated entities now beneficially own 22,049,297 shares of Kodiak common stock, representing 35.0% of shares outstanding.
- The filing reports open-market purchases of 2,204,929 shares on September 28-29, 2026, at weighted-average prices ranging from $61.21 to $89.86 per share.
- Felix J. Baker serves on Kodiak's Board as Chair of the Compensation Committee and on the Nominating/Governance Committee.
- The stated purpose remains investment purposes, with no specific plans for extraordinary corporate transactions disclosed.
Financial Impact
Baker Bros. spent approximately $176.5 million to acquire 2,204,929 shares in a two-day buying spree, increasing their total stake value to over $1.9 billion at current prices.
Risk Factors
- Kodiak is a clinical-stage biotech with no approved products; pipeline failure could lead to significant downside.
- Baker Bros.' dominant position (35%) could create overhang if they decide to reduce their stake.
- The purchases were made at prices up to $90; a sustained decline below those levels could signal a change in sentiment.
Investment Themes
Documents Analyzed
This report is based on 5 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| SC 13D/A Filing (Primary) | 0001104659-26-112371 |
| Document: tm2626623d1_ex99-1.htm | 0001104659-26-112371 |
| Document: 0001104659-26-112371-index-headers.html | 0001104659-26-112371 |
| Document: 0001104659-26-112371-index.html | 0001104659-26-112371 |
| Document: 0001104659-26-112371.txt | 0001104659-26-112371 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 20, 2026 6d ago | S-3ASR | $87.72 | awaiting T+20 | — | $89.60 (−2.14%) |
Sep 30, 2026 26d ago | SC 13D/A | $98.46 | awaiting T+20 | — | $89.60 (−9.00%) |
Sep 30, 2026 27d ago | Insider Buy | $98.46 | awaiting T+20 | — | $89.60 (−9.00%) |
Sep 28, 2026 28d ago | 8-K | $89.92 $89.60 | ▼ −0.36% | ▼ −0.32% | $89.60 (−0.36%) |
Aug 13, 2026 10w ago | 8-K | $41.35 $33.14 | ▼ −19.85% | ▼ −17.86% | $89.60 (+116.69%) |
Aug 13, 2026 10w ago | Press Release | $41.35 $33.14 | ▼ −19.85% | ▼ −17.86% | $89.60 (+116.69%) |
Jun 11, 2026 19w ago | Institutional Cluster | $33.97 $40.08 | ▲ +17.99% | ▲ +16.10% | $89.60 (+163.76%) |
May 7, 2026 24w ago | 8-K | $41.01 $31.05 | ▼ −24.29% | ▼ −24.31% | $89.60 (+118.48%) |
Mar 31, 2026 29w ago | 8-K | $42.81 $43.67 | ▲ +2.01% | ▼ −7.71% | $89.60 (+109.30%) |
US Market Status
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