Shulamit Ron-Bigger - 08 Jan 2026 Form 3 Insider Report for Aktis Oncology, Inc. (AKTS)

Role
Chief Operating Officer
Signature
/s/ Shulamit Ron-Bigger
Issuer symbol
AKTS
Transactions as of
08 Jan 2026
Net transactions value
$0
Form type
3
Filing time
08 Jan 2026, 21:03:40 UTC
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Ron-Bigger Shulamit Chief Operating Officer C/O AKTIS ONCOLOGY, INC., 17 DRYDOCK AVENUE, SUITE 17-401, BOSTON /s/ Shulamit Ron-Bigger 08 Jan 2026 0002049407

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
holding AKTS Stock Option (Right to Buy) 08 Jan 2026 Common Stock 267,888 $3.66 Direct F1
holding AKTS Stock Option (Right to Buy) 08 Jan 2026 Common Stock 18,697 $4.95 Direct F1
holding AKTS Stock Option (Right to Buy) 08 Jan 2026 Common Stock 118,284 $9.33 Direct F2
holding AKTS Stock Option (Right to Buy) 08 Jan 2026 Common Stock 131,426 $18.00 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 25% of the original number of shares subject to the option vested on September 19, 2023, and 1/48th of the original number of shares subject to the option vested or shall vest in monthly installments thereafter, subject to the Reporting Person's continuous service through each vesting date, inclusive.
F2 25% of the original number of shares subject to the option vested on October 9, 2025, and 1/48th of the original number of shares subject to the option vested or shall vest in monthly installments thereafter, subject to the Reporting Person's continuous service through each vesting date, inclusive.
F3 25% of the original number of shares subject to the option shall vest on January 8, 2027, and 1/48th of the original number of shares subject to the option shall vest in monthly installments thereafter, subject to the Reporting Person's continuous service through each vesting date, inclusive.

Remarks:

Exhibit 24 - Power of Attorney