Rachel A. Stahler - 27 Feb 2026 Form 4 Insider Report for Organon & Co. (OGN)

Role: Chief Information Officer
Signature: /s/ Faye C. Brown, as Attorney-in-fact for Rachel A. Stahler
Issuer symbol: OGN
Transactions as of: 27 Feb 2026
Net transactions value: -$76,961
Form type: 4
Filing time: 03 Mar 2026, 18:59:21 UTC
Previous filing: 02 Apr 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Stahler Rachel A	Chief Information Officer	C/O ORGANON & CO., 30 HUDSON STREET, FLOOR 33, JERSEY CITY	/s/ Faye C. Brown, as Attorney-in-fact for Rachel A. Stahler	03 Mar 2026	0001679854

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	OGN	Common Stock	Award	$0	+23,178	+30%	$0.000000	100,409	27 Feb 2026	Direct	F1
transaction	OGN	Common Stock	Tax liability	$60,766	-8,475	-8.4%	$7.17	91,934	27 Feb 2026	Direct
transaction	OGN	Common Stock	Award	$0	+6,540	+7.1%	$0.000000	98,474	27 Feb 2026	Direct	F2
transaction	OGN	Common Stock	Tax liability	$16,195	-2,240	-2.2%	$7.23	98,310	27 Feb 2026	Direct	F3

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

Explanation of Responses:

Id	Content
F1	Represents shares of Organon & Co. common stock ("Common Stock") for performance share units ("PSUs") granted to the reporting person on August 11, 2023 under the Organon & Co. 2021 Incentive Stock Plan. The performance-vesting restrictions with respect to these shares were released upon certification of performance goal attainment by the Talent Committee of Organon's Board of Directors.
F2	Represents the shares of Common Stock released to cover the dividend equivalents earned on the PSUs released above.
F3	Includes the addition of 2,076.678 shares of Common Stock acquired from dividend equivalents net of withholding tax not previously required to be reported.

Remarks:

Exhibit 24 - Power of Attorney