BetaInsiders sold $2.2M in the past 12 months.100% was sold under disclosed trading plans. The largest seller, John Borgeson (Chief Financial Officer), sold $2.2M. 100% of these sales were shares from exercising options.Share-of-stake figures for this company are being verified and will be added when that check is finished. Why
Routine activity: 100% of sales were under disclosed plans, and no insider sold more than 1% of vested holdings.
A share of stake is shown for 0 of the 1 officer or director who sold. 7 are left out Disclosed company stock is not an insider's whole wealth.i
Left out: Victor Perlroth, John Borgeson, Bassil Dahiyat, Robert Profusek, Richard Levy, Taiyin Yang and Charles Bancroft (share of stake is being verified).
Officers and directors, past 12 months. Their share of stake is being verified and is not shown yet; amounts and trading plans are below.
Officers and directors, Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.
No officer or director trades were reported for the past 30 days. The most recent before that:
| Who | Shares | Price | % of total stake | Total stake after | Trade date | Filed |
|---|---|---|---|---|---|---|
| John Borgeson Chief Financial Officer | 30,000 | $34.10 | n/a | n/a | Jun 4, 2026 | Jun 5, 2026 |
BAKER BROS. ADVISORS LP reported no open-market sales in the past 12 months. Large shareholders and the funds or companies that board members represent are not part of management, so they are left out of the figures above.
No. Victor Perlroth reported no open-market sales in the past 12 months.
Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 100% of sales by value ran under 10b5-1 trading plans disclosed in the filings. A trading plan schedules sales in advance.
No. Officers and directors reported no purchases in the past 12 months.
| Who sold | Amount | % of holdings | Trading plan |
|---|---|---|---|
| John Borgeson Chief Financial Officer | $2.2M 60K shares | Not confirmedshare of stake is being verified. Why | Disclosed plan |
Outside holder, reported separately: BAKER BROS. ADVISORS LP (a 10% owner, not part of management). No open-market sales reported in the period. Latest filing
Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.
| Insider | Held Oct 13, 2025 | Sold | Held Oct 13, 2026 | Still held | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Victor Perlroth!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. See the filing Sales and other transactions for Victor Perlroth are complete. Chairman and CEO, Director | n/a | 0 | n/a | n/a | ||||||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Victor PerlrothHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Victor Perlroth are complete; balances and unit counts will be added when the check is finished. −13Kgifted (net of own trusts) Stock options (not counted as shares):
Estimate: options held × ($85.89 − strike price), using the most recent insider trade price on Form 4 (Sep 29, 2026), not a market close. | ||||||||||||||||||||||||
John Borgeson!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for John Borgeson are complete. Chief Financial Officer | n/a | −60K | n/a | n/a | ||||||||||||||||||||
Vesting, gifts, unvested awards and holding lines for John BorgesonHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for John Borgeson are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) Stock options (not counted as shares):
Estimate: options held × ($85.89 − strike price), using the most recent insider trade price on Form 4 (Sep 29, 2026), not a market close. | ||||||||||||||||||||||||
Bassil Dahiyat!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Bassil Dahiyat are complete. Director | n/a | 0 | n/a | n/a | ||||||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Bassil DahiyatHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Bassil Dahiyat are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) Stock options (not counted as shares):
Estimate: options held × ($85.89 − strike price), using the most recent insider trade price on Form 4 (Sep 29, 2026), not a market close. | ||||||||||||||||||||||||
Robert Profusek!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Robert Profusek are complete. Director | n/a | 0 | n/a | n/a | ||||||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Robert ProfusekHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Robert Profusek are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) Stock options (not counted as shares):
Estimate: options held × ($85.89 − strike price), using the most recent insider trade price on Form 4 (Sep 29, 2026), not a market close. | ||||||||||||||||||||||||
Richard Levy!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Richard Levy are complete. Director | n/a | 0 | n/a | n/a | ||||||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Richard LevyHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Richard Levy are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) Stock options (not counted as shares):
Estimate: options held × ($85.89 − strike price), using the most recent insider trade price on Form 4 (Sep 29, 2026), not a market close. | ||||||||||||||||||||||||
Taiyin Yang!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Taiyin Yang are complete. Director | n/a | 0 | n/a | n/a | ||||||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Taiyin YangHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Taiyin Yang are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) Stock options (not counted as shares):
Estimate: options held × ($85.89 − strike price), using the most recent insider trade price on Form 4 (Sep 29, 2026), not a market close. | ||||||||||||||||||||||||
Charles Bancroft!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Charles Bancroft are complete. Director | n/a | 0 | n/a | n/a | ||||||||||||||||||||
Vesting, gifts, unvested awards and holding lines for Charles BancroftHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Charles Bancroft are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) Stock options (not counted as shares):
Estimate: options held × ($85.89 − strike price), using the most recent insider trade price on Form 4 (Sep 29, 2026), not a market close. | ||||||||||||||||||||||||
Holdings and share of stake for Kodiak Sciences Inc. are being verified, so no balances, unit counts or percentages are shown. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings.
Officer and director open-market sales: $2.2M across 60,000 shares. Plan status and stated purpose are separate questions, and a sale can have both.
| Seller | Shares sold | Proceeds | Under a disclosed plan | Share of total | Sales dates |
|---|---|---|---|---|---|
| John Borgeson Chief Financial Officer | 60K | $2.2M | 100% | 100% | Apr 2, 2026 to Jun 4, 2026 |
| Month | Sale proceeds | Disclosed plan | To cover taxes | No plan disclosed |
|---|---|---|---|---|
| Oct 2025 | $0 | $0 | $0 | $0 |
| Nov 2025 | $0 | $0 | $0 | $0 |
| Dec 2025 | $0 | $0 | $0 | $0 |
| Jan 2026 | $0 | $0 | $0 | $0 |
| Feb 2026 | $0 | $0 | $0 | $0 |
| Mar 2026 | $0 | $0 | $0 | $0 |
| Apr 2026 | $1.2M | $1.2M | $0 | $0 |
| May 2026 | $0 | $0 | $0 | $0 |
| Jun 2026 | $1.0M | $1.0M | $0 | $0 |
| Jul 2026 | $0 | $0 | $0 | $0 |
| Aug 2026 | $0 | $0 | $0 | $0 |
| Sep 2026 | $0 | $0 | $0 | $0 |
| Oct 2026 | $0 | $0 | $0 | $0 |
Less than usual: about one-fifth of the 5-year average. 1 insider sold; the average is 2 a year.
| 12 months ending | Shares sold | Insiders who sold | Proceeds |
|---|---|---|---|
| Oct 13, 2026 Latest 12 months | 60K | 1 | $2.2M |
| Oct 13, 2025 1 year earlier | 723 | 1 | $3K |
| Oct 13, 2024 2 years earlier | 4.4K | 1 | $12K |
| Oct 14, 2023 3 years earlier | 7.6K | 2 | $71K |
| Oct 14, 2022 4 years earlier | 1.38M | 3 | $14.9M |
| Oct 14, 2021 5 years earlier | 128K | 2 | $15.0M |
Open-market sales (Form 4 code S) by people who were officers or directors, in split-adjusted shares. Earlier years include people who have since left. A sale that an outside holder also reports (a family trust, a fund) is counted with outside holders in every year. Shares, not dollars, are compared, so a change in the stock price doesn't look like a change in selling. Years the filings don't fully cover are shown but left out of the average.
Holdings and share of stake are being verified. Balances, unit counts and every share-of-stake figure for Kodiak Sciences Inc. are held back until that check is finished. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings and are complete.
External context: we only cite outside events when a documented connection exists. None is shown for this period.
All 190 Forms 3, 4 and 5 on record for Kodiak Sciences Inc. (SEC CIK 1468748), filed from Oct 3, 2018 to Sep 30, 2026; 19 of them were filed in the 12 months this page covers, retrieved from SEC EDGAR on Oct 13, 2026. Prices are the ones reported in each filing, often weighted averages.
Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.
Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".
| Name | Last filed | Last reported balance |
|---|---|---|
| Jason Ehrlich | Jun 27, 2023 | 61,924 shares, last reported balance as of Jun 16, 2023 |
| Hong Liang | Apr 6, 2020 | 130,166 shares, last reported balance as of Apr 2, 2020 |
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