Altos Venture AG - 14 Jul 2025 Form 4 Insider Report for Onconetix, Inc. (ONCO)

Role: 10%+ Owner
Signature: Altos Venture, AG, by /s/ Tobias Fischli, Authorized Signatory
Issuer symbol: ONCO
Transactions as of: 14 Jul 2025
Net transactions value: $0
Form type: 4
Filing time: 16 Jul 2025, 16:03:52 UTC
Previous filing: 01 Nov 2024
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Altos Venture AG	10%+ Owner	OBERTORWEG 64, ALLSCHWIL, SWITZERLAND	Altos Venture, AG, by /s/ Tobias Fischli, Authorized Signatory	16 Jul 2025	0002006260

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ONCO	Common Stock	Other		+241,514	+761%		273,230	14 Jul 2025	Direct	F1, F2

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
transaction	ONCO	Make-whole right (right to acquire)	Other		-241,514	-100%		0	14 Jul 2025	Common Stock	241,514		Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	1. Pursuant to a Subscription Agreement with the Issuer dated December 15, 2023, the Reporting Person purchased Units of Common Stock and warrants (immediately exercised) on September 24, 2024. Under a "make-whole" provision in the Subscription Agreement, the Issuer agreed to adjust the price for the Units by issuing additional shares of Common Stock to the Reporting Person based on the Issuer VWAP (as defined in the Subscription Agreement) during a specified period following the purchase. At the end of the period, the number of additional shares to be issued was determined to be 241,514, and those shares were issued to the Reporting Person on July 14, 2025 pursuant to the "make-whole" provision.
F2	On September 24, 2024, the Issuer effected a 1-for-40 reverse split of its Common Stock, and on June 13, 2025, the Issuer effected a 1-for-85 reverse split of its Common Stock.

Content

1. Pursuant to a Subscription Agreement with the Issuer dated December 15, 2023, the Reporting Person purchased Units of Common Stock and warrants (immediately exercised) on September 24, 2024. Under a "make-whole" provision in the Subscription Agreement, the Issuer agreed to adjust the price for the Units by issuing additional shares of Common Stock to the Reporting Person based on the Issuer VWAP (as defined in the Subscription Agreement) during a specified period following the purchase. At the end of the period, the number of additional shares to be issued was determined to be 241,514, and those shares were issued to the Reporting Person on July 14, 2025 pursuant to the "make-whole" provision.

On September 24, 2024, the Issuer effected a 1-for-40 reverse split of its Common Stock, and on June 13, 2025, the Issuer effected a 1-for-85 reverse split of its Common Stock.