Ken Herrmann - 08 Jan 2026 Form 3 Insider Report for Aktis Oncology, Inc. (AKTS)

Role
Director
Signature
/s/ Ken Herrmann
Issuer symbol
AKTS
Transactions as of
08 Jan 2026
Net transactions value
$0
Form type
3
Filing time
08 Jan 2026, 21:08:21 UTC
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Herrmann Ken Director C/O AKTIS ONCOLOGY, INC., 17 DRYDOCK AVENUE, SUITE 17-401, BOSTON /s/ Ken Herrmann 08 Jan 2026 0002049757

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 6,571 $0.0800 Direct F1
holding AKTS Stock Option (Right to Buy) 08 Jan 2026 Common Stock 19,714 $1.91 Direct F2
holding AKTS Stock Option (Right to Buy) 08 Jan 2026 Common Stock 26,285 $3.66 Direct F3
holding AKTS Stock Option (Right to Buy) 08 Jan 2026 Common Stock 64,399 $4.95 Direct F4
holding AKTS Stock Option (Right to Buy) 08 Jan 2026 Common Stock 10,514 $10.66 Direct F5
holding AKTS Stock Option (Right to Buy) 08 Jan 2026 Common Stock 18,933 $18.00 Direct F6
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 These options have vested in full.
F2 These options have vested in full.
F3 25% of the original number of shares subject to the option vested on November 1, 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.
F4 Beginning on May 13, 2024, 1/48th of the original number of shares subject to the option vested or shall vest in monthly installments, subject to the Reporting Person's continuous service through each vesting date, inclusive.
F5 Beginning on October 9, 2024, 1/48th of the original number of shares subject to the option vested or shall vest in monthly installments, subject to the Reporting Person's continuous service through each vesting date, inclusive.
F6 The number of shares subject to the option shall vest in full on January 8, 2027, subject to the Reporting Person's continuous service through such vesting date.

Remarks:

Exhibit 24 - Power of Attorney