OGN

Organon & Co

6 superinvestors own OGN

Based on latest 13F filings — data is 45–90 days delayed

Investor	Fund	Weight	Shares	Value	Quarter	Activity
Kahn Brothers Group	Kahn Brothers Group	5.88%	5,536,993	$33.2M	2026Q1	Added
Bill Miller	Miller Value Partners	2.97%	272,000	$4.7M	2023Q3	Added
Harry Burn	Sound Shore	2.60%	4,977,078	$74.1M	2025Q1	Held
Warren Buffett	Berkshire Hathaway	0.02%	1,550,481	$46.9M	2021Q2	New
Kenneth Fisher	Fisher Asset Management	0.00%	11,674	$275K	2023Q1	Reduced
Dodge & Cox	Dodge & Cox	0.00%	5,854	$204K	2022Q1	Reduced

Open-market purchases (P) and sales (S) from SEC Form 4 filings · last 12 months

No open-market insider trades in the last 12 months.

Form 4 filings for option exercises and other transaction types are excluded.

STOCK Act disclosures · last 12 months

Congressional trade data coming soon.

We are sourcing STOCK Act disclosures and will display them here shortly.

What Is SEC Form 4?

Understand the insider trade filings behind OGN activity.

What Is a 13F Filing?

How superinvestors disclose their quarterly holdings.

Insider Cluster Buying

Why multiple insiders buying together is a strong signal.

Superinvestor Consensus

The most widely held stocks across all tracked institutions.