KOD insider buying – Kodiak Sciences Inc.
28 insider purchases since 2016 worth $722.6M by 9 different insiders. Last 12 months: 5 purchases, $241.3M. Most recent filing: 2026-11-06.
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits. 11 older purchases (before the 5-year window) are listed in the table below.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| Baker Brothers Life Sciences LP Director | $311.7M 8× · 7,986,942 sh | 2018-10-09 2025-12-18 | – | 18,358,772 shares as of 2025-12-19 | Holds - never sold |
| BAKER FELIX Director | $127.3M 5× · 2,951,815 sh | 2019-12-06 2022-05-25 | – | 1,251,349 shares as of 2022-05-27 | Holds - never sold |
| Baker Bros. Advisors (GP) LLC Director | $77.4M 4× · 1,540,463 sh | 2021-08-11 2026-09-28 | – | 18,373,116 shares as of 2026-09-30 | Holds - never sold |
| 667, L.P. Director | $73.4M 2× · 829,988 sh | 2021-08-17 2026-09-28 | – | 1,669,727 shares as of 2026-09-30 | Holds - never sold |
| BAKER JULIAN Director | $72.1M 3× · 1,118,551 sh | 2020-02-24 2026-09-28 | – | 19,221,341 shares as of 2026-09-30 | Holds - never sold |
| BAKER BROS. ADVISORS LP Director | $36.2M 3× · 638,083 sh | 2020-08-19 2022-01-27 | – | 1,163,261 shares as of 2022-01-31 | Holds - never sold |
| BAKER BROS. ADVISORS LP (+5 related) Director, 10% Owner | $24.3M 1× · 247,090 sh | 2026-11-04 2026-11-04 | – | – | Holds - never sold |
| PROFUSEK ROBERT Director | $100,000 1× · 10,000 sh | 2018-10-09 2018-10-09 | – | 10,000 shares as of 2018-10-09 | Holds - never sold |
| Levy Richard S Director | $44,330 1× · 1,000 sh | 2020-03-20 2020-03-20 | – | 250 shares as of 2020-03-24 | Holds - never sold |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 4 | $181.3M | 4 | 2 | $2.2M |
| 2025 | 1 | $60.0M | 1 | – | – |
| 2022 | 6 | $78.2M | 4 | 2 | $12.7M |
| 2021 | 6 | $59.3M | 4 | 18 | $13.3M |
| 2020 | 8 | $231.1M | 5 | 18 | $7.6M |
| 2019 | 1 | $87.5M | 1 | – | – |
| 2018 | 2 | $25.1M | 2 | – | – |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2026-11-06 | BAKER BROS. ADVISORS LP (+5 related) | Director, 10% Owner | 247,090 | $98.51 | $24.3M | +1% | SEC |
| 2026-09-30 | Baker Bros. Advisors (GP) LLC | Director | 807,840 | $72.57 | $58.6M | +4.4% | SEC |
| 2026-09-30 | BAKER JULIAN | Director | 418,323 | $83.58 | $35.0M | +2.2% | SEC |
| 2026-09-30 | 667, L.P. | Director | 715,592 | $88.60 | $63.4M | +3.7% | SEC |
| 2025-12-19 | Baker Brothers Life Sciences LP | Director | 2,608,696 | $23.00 | $60.0M | +16.6% | SEC |
| 2022-06-06 | Baker Bros. Advisors (GP) LLC | Director | 572,349 | $7.77 | $4.4M | +3.7% | SEC |
| 2022-05-27 | BAKER FELIX | Director | 350,406 | $6.74 | $2.4M | +2.3% | SEC |
| 2022-05-18 | Baker Brothers Life Sciences LP | Director | 456,690 | $5.91 | $2.7M | +3.1% | SEC |
| 2022-02-17 | Baker Brothers Life Sciences LP | Director | 400,965 | $54.45 | $21.8M | +2.8% | SEC |
| 2022-01-31 | BAKER BROS. ADVISORS LP | Director | 347,665 | $52.02 | $18.1M | +2.5% | SEC |
| 2022-01-25 | BAKER FELIX | Director | 501,111 | $57.49 | $28.8M | +3.7% | SEC |
| 2021-10-01 | BAKER BROS. ADVISORS LP | Director | 86,932 | $95.83 | $8.3M | +0.6% | SEC |
| 2021-09-17 | Baker Brothers Life Sciences LP | Director | 31,838 | $94.39 | $3.0M | +0.2% | SEC |
| 2021-09-09 | Baker Bros. Advisors (GP) LLC | Director | 57,501 | $93.31 | $5.4M | +0.4% | SEC |
| 2021-08-19 | 667, L.P. | Director | 114,396 | $87.50 | $10.0M | +0.9% | SEC |
| 2021-08-13 | Baker Bros. Advisors (GP) LLC | Director | 102,773 | $87.19 | $9.0M | +0.8% | SEC |
| 2021-06-30 | Baker Brothers Life Sciences LP | Director | 257,929 | $91.72 | $23.7M | +2.0% | SEC |
| 2020-11-24 | Baker Brothers Life Sciences LP | Director | 1,527,777 | $108.00 | $165.0M | +13.6% | SEC |
| 2020-09-25 | BAKER FELIX | Director | 48,125 | $56.65 | $2.7M | +0.4% | SEC |
| 2020-09-24 | Baker Brothers Life Sciences LP | Director | 203,047 | $51.71 | $10.5M | +1.8% | SEC |
| 2020-09-08 | BAKER JULIAN | Director | 322,979 | $47.43 | $15.3M | +3.0% | SEC |
| 2020-08-21 | BAKER BROS. ADVISORS LP | Director | 203,486 | $48.23 | $9.8M | +1.9% | SEC |
| 2020-03-24 | Levy Richard S | Director | 1,000 | $44.33 | $44,330 | SEC | |
| 2020-03-18 | BAKER FELIX | Director | 150,000 | $39.29 | $5.9M | +1.4% | SEC |
| 2020-02-26 | BAKER JULIAN | Director | 377,249 | $57.87 | $21.8M | +3.7% | SEC |
| 2019-12-06 | BAKER FELIX | Director | 1,902,173 | $46.00 | $87.5M | +23.1% | SEC |
| 2018-10-11 | Baker Brothers Life Sciences LP | Director | 2,500,000 | $10.00 | $25.0M | +42.6% | SEC |
| 2018-10-09 | PROFUSEK ROBERT | Director | 10,000 | $10.00 | $100,000 | SEC |
Insider sales
| Filed | Insider | Role | Shares | Avg price | Value | Type | Filing |
|---|---|---|---|---|---|---|---|
| 2026-06-05 | BORGESON JOHN A. | CFO | 30,000 | $34.10 | $1.0M | Pre-planned (10b5-1) | SEC |
| 2026-04-02 | BORGESON JOHN A. | CFO | 30,000 | $39.92 | $1.2M | Pre-planned (10b5-1) | SEC |
| 2022-02-28 | PERLROTH VICTOR | CEO | 1,340,000 | $9.15 | $12.3M | Sale | SEC |
| 2022-01-24 | EHRLICH JASON | Officer | 6,950 | $64.38 | $447,465 | Sale | SEC |
| 2021-12-22 | EHRLICH JASON | Officer | 6,950 | $87.60 | $608,843 | Sale | SEC |
| 2021-11-24 | EHRLICH JASON | Officer | 6,950 | $99.15 | $689,113 | Sale | SEC |
| 2021-11-12 | BORGESON JOHN A. | Officer | 876 | $115.42 | $101,111 | Sale | SEC |
| 2021-10-22 | EHRLICH JASON | Officer | 6,950 | $111.77 | $776,807 | Sale | SEC |
| 2021-09-22 | EHRLICH JASON | Officer | 6,950 | $99.88 | $694,133 | Sale | SEC |
| 2021-08-24 | EHRLICH JASON | Officer | 6,950 | $91.45 | $635,547 | Sale | SEC |
| 2021-07-22 | EHRLICH JASON | Officer | 6,950 | $86.28 | $599,616 | Sale | SEC |
| 2021-06-23 | EHRLICH JASON | Officer | 6,950 | $84.90 | $590,073 | Sale | SEC |
| 2021-06-17 | EHRLICH JASON | Officer | 1,454 | $80.90 | $117,629 | Sale | SEC |
| 2021-06-17 | BORGESON JOHN A. | Officer | 1,290 | $80.90 | $104,361 | Sale | SEC |
| 2021-06-15 | EHRLICH JASON | Officer | 1,147 | $84.75 | $97,208 | Sale | SEC |
Showing the latest 15 of 40 sales of $50,000+ since 2016.
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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