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Kodiak Sciences Inc. — Insider Transactions

Form 4 filings by directors, officers, and 10%+ shareholders

SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.

Overview All Filings Annual Quarterly Insiders
Insider Title Type Shares Price Value Owns After Date
Baker Brothers Life Sciences LP Purchase 2,391,268 $23.00 $54,999,164 18,358,772 Dec 18, 2025
BORGESON JOHN A. See Remarks Option Exercise 1,875 184,039 Jun 17, 2025
BORGESON JOHN A. See Remarks Option Exercise 5,494 185,038 Jun 17, 2024
BORGESON JOHN A. See Remarks Sale 1,558 $2.92 $4,549 179,544 Jun 11, 2024
EHRLICH JASON See Remarks Sale 2,258 $9.23 $20,841 61,924 Jun 14, 2023
BORGESON JOHN A. See Remarks Sale 2,749 $9.23 $25,373 178,077 Jun 14, 2023
EHRLICH JASON See Remarks Option Exercise 2,900 59,820 Jun 11, 2023
BORGESON JOHN A. See Remarks Option Exercise 3,025 176,780 Jun 11, 2023
PERLROTH VICTOR Chairman and CEO Gift 60,000 3,448,038 Dec 30, 2022
EHRLICH JASON See Remarks Option Exercise 5,494 60,407 Jun 15, 2022
BORGESON JOHN A. See Remarks Sale 1,545 $7.21 $11,139 176,553 Jun 15, 2022
EHRLICH JASON See Remarks Option Exercise 2,900 54,913 Jun 11, 2022
BORGESON JOHN A. See Remarks Option Exercise 3,025 172,604 Jun 11, 2022
Baker Bros. Advisors (GP) LLC Purchase 20,108 $7.78 $156,440 1,342,986 Jun 3, 2022
BAKER FELIX Purchase 5,688 $6.53 $37,143 1,251,349 May 25, 2022
Baker Brothers Life Sciences LP Purchase 912 $5.97 $5,445 1,245,661 May 17, 2022
PERLROTH VICTOR Chairman and CEO Sale 340,000 $8.99 $3,056,600 2,168,038 Feb 24, 2022
Baker Brothers Life Sciences LP Purchase 5,174 $53.82 $278,465 14,462,968 Feb 16, 2022
BAKER BROS. ADVISORS LP Purchase 953 $51.61 $49,184 1,163,261 Jan 31, 2022
BAKER FELIX Purchase 9,350 $58.76 $549,406 13,964,790 Jan 24, 2022
EHRLICH JASON See Remarks Sale 2,416 $63.55 $153,537 55,267 Jan 20, 2022
EHRLICH JASON See Remarks Option Exercise 6,950 $10.29 $71,516 58,491 Dec 20, 2021
EHRLICH JASON See Remarks Sale 3,701 $98.63 $365,030 54,599 Nov 22, 2021
BORGESON JOHN A. See Remarks Sale 204 $116.29 $23,723 169,443 Nov 10, 2021
EHRLICH JASON See Remarks Sale 5,698 $111.56 $635,669 52,793 Oct 20, 2021
BAKER BROS. ADVISORS LP Option Exercise 138,815 $0.01 $1,388 13,439,808 Sep 29, 2021
EHRLICH JASON See Remarks Sale 6,098 $99.74 $608,215 52,393 Sep 20, 2021
Baker Brothers Life Sciences LP Purchase 30,285 $94.38 $2,858,298 13,299,440 Sep 15, 2021
Baker Bros. Advisors (GP) LLC Purchase 52,201 $93.35 $4,872,963 13,269,155 Sep 7, 2021
EHRLICH JASON See Remarks Option Exercise 5,258 $10.29 $54,105 58,491 Aug 20, 2021
667, L.P. Purchase 2,396 $87.48 $209,602 13,138,019 Aug 18, 2021
Baker Bros. Advisors (GP) LLC Purchase 600 $85.72 $51,432 12,998,808 Aug 11, 2021
EHRLICH JASON See Remarks Sale 2,234 $85.76 $191,588 57,949 Jul 20, 2021
Baker Brothers Life Sciences LP Purchase 10,170 $90.76 $923,029 12,751,926 Jun 30, 2021
EHRLICH JASON See Remarks Sale 845 $86.07 $72,729 60,183 Jun 21, 2021
EHRLICH JASON See Remarks Sale 1,454 $80.90 $117,629 67,133 Jun 15, 2021
BORGESON JOHN A. See Remarks Option Exercise 3,619 171,609 Jun 15, 2021
EHRLICH JASON See Remarks Sale 1,147 $84.75 $97,208 64,968 Jun 11, 2021
BORGESON JOHN A. See Remarks Sale 1,037 $84.75 $87,886 167,990 Jun 11, 2021
EHRLICH JASON See Remarks Sale 1,490 $81.77 $121,837 63,558 May 20, 2021
EHRLICH JASON See Remarks Option Exercise 5,379 $10.29 $55,350 68,222 May 12, 2021
EHRLICH JASON See Remarks Sale 3,650 $111.31 $406,282 64,289 Apr 20, 2021
EHRLICH JASON See Remarks Sale 1,984 $130.49 $258,892 67,809 Mar 22, 2021
BORGESON JOHN A. See Remarks Sale 1,255 $130.82 $164,179 166,704 Mar 10, 2021
EHRLICH JASON See Remarks Option Exercise 12,500 $10.29 $128,625 62,843 Mar 3, 2021
EHRLICH JASON See Remarks Sale 262 $122.00 $31,964 57,031 Feb 22, 2021
EHRLICH JASON See Remarks Option Exercise 26,950 $10.29 $277,316 77,293 Jan 20, 2021
EHRLICH JASON See Remarks Sale 1,096 $147.32 $161,463 43,224 Dec 21, 2020
EHRLICH JASON See Remarks Sale 2,614 $139.96 $365,855 42,900 Nov 20, 2020
Baker Brothers Life Sciences LP Purchase 1,411,619 $108.00 $152,454,852 12,736,556 Nov 20, 2020