Organon & Co
Ownership
Ownership Structure
Who owns Organon & Co (OGN)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 92.5% of the shares are freely tradable; institutional investors hold 77.9%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 12.21 | 32,056,866 | +1.1 | 06/30/2026 |
| Pentwater Capital Management LP | 6.89 | 18,100,000 | +0.0 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 5.76 | 15,132,118 | -30.7 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.54 | 11,909,865 | +1.5 | 06/30/2026 |
| State Street Corp | 3.68 | 9,659,371 | -3.0 | 06/30/2026 |
| The Goldman Sachs Group Inc | 1.98 | 5,199,002 | +223.9 | 06/30/2026 |
| UBS Group AG | 1.85 | 4,856,529 | +39.9 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 5.96 | 15,638,261 | +0.0 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.19 | 8,381,117 | +0.4 | 09/30/2026 |
| Vanguard Small Cap Index | 2.25 | 5,902,958 | -2.2 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Arjona Ferreira Juan Camilo | Head of R&D & CMO | 37,432 | 516,568 $ | Aug 11, 2026 | direct |
| Drinane Juliana Papa | Head of Mfg & Supply | 18,475 | 254,951 $ | Aug 5, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 11, 2026 | Arjona Ferreira Juan Camilo | Head of R&D & CMO | Other | 4,134 | 13.62 | 56,305 |
| Aug 11, 2026 | Arjona Ferreira Juan Camilo | Head of R&D & CMO | Other | 11,519 | 0.00 | – |
| Aug 5, 2026 | Drinane Juliana Papa | Head of Mfg & Supply | Sell | 14,761 | 13.57 | 200,307 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: October 30, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.