Organon & Co.
Organon & Co. (OGN) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · OGN · as of Mar 31, 2025
Ownership Breakdown
729
Institutional Holders
▼ 25 vs Q4
$3.03B
Total Inst. Value
▼ $104.12M vs Q4
262.60M
Shares Outstanding
freeFloat 99.42%
203.00M
13F Shares Held
▼ 3.36M vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
OGN largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. pharmaceutical preparations | 31.88M | 12.36% | 12.36% | $474.65B | May 2, 2025 | ▼ 913.6K |
VANGUARD GROUP INC pharmaceutical preparations | 29.70M | 11.52% | 11.52% | $442.26B | May 9, 2025 | ▼ 700.0K |
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ pharmaceutical preparations | 10.72M | 4.16% | 4.16% | $159.55B | May 2, 2025 | ▲ 820.4K |
STATE STREET CORP pharmaceutical preparations | 8.98M | 3.48% | 3.48% | $133.71B | May 15, 2025 | ▼ 358.5K |
LSV ASSET MANAGEMENT pharmaceutical preparations | 7.98M | 3.10% | 3.10% | $118.83B | May 9, 2025 | ▲ 455.7K |
MORGAN STANLEY pharmaceutical preparations | 5.61M | 2.18% | 2.18% | $83.57B | May 15, 2025 | ▲ 1.06M |
SOUND SHORE MANAGEMENT INC /CT/ pharmaceutical preparations | 4.98M | 1.93% | 1.93% | $74.11B | May 6, 2025 | ▲ 8.4K |
NORDEA INVESTMENT MANAGEMENT AB pharmaceutical preparations | 4.85M | 1.88% | 1.88% | $70.91B | May 14, 2025 | ▼ 1.89M |
DEPRINCE RACE & ZOLLO INC pharmaceutical preparations | 4.65M | 1.80% | 1.80% | $69.25B | May 15, 2025 | ▼ 78.2K |
GEODE CAPITAL MANAGEMENT, LLC pharmaceutical preparations | 4.52M | 1.75% | 1.75% | $67.28B | May 13, 2025 | ▲ 257.1K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
30
Increased
+16.22M shares1
New Positions
first time holders19
Decreased
−7.48M shares0
Sold Out
fully exitedNet shares change (top 50)
+8.74M
+16.22M / −7.48M
Net new holders
+12
1 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
OGN insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
2
Buy transactions
1
Sell transactions
2.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Holzbaur Lynette SVP and Corporate Controller | May 6, 2026 | J-Other | 45.939 | — | — | 26.4K | Form 4 ↗ |
Holzbaur Lynette SVP and Corporate Controller | May 6, 2026 | Sale | 26,448.366 | $13.35 | $353.1K | 0 | Form 4 ↗ |
Holzbaur Lynette SVP and Corporate Controller | May 6, 2026 | Purchase | 26,448.366 | $13.35 | $353.1K | 52.9K | Form 4 ↗ |
Drinane Juliana Papa Interim Head of Mfg & Supply | Mar 31, 2026 | Award | 125,208 | — | — | 125.2K | Form 4 ↗ |
Drinane Juliana Papa Interim Head of Mfg & Supply | Mar 31, 2026 | Tax Withhold | 3,451 | $5.70 | $19.7K | 33.2K | Form 4 ↗ |
Drinane Juliana Papa Interim Head of Mfg & Supply | Mar 31, 2026 | Tax Withhold | 2,185 | $5.70 | $12.5K | 26.6K | Form 4 ↗ |
Arjona Ferreira Juan Camilo Head of R&D & CMO | Mar 31, 2026 | Award | 200,333 | — | — | 200.3K | Form 4 ↗ |
Arjona Ferreira Juan Camilo Head of R&D & CMO | Mar 31, 2026 | Tax Withhold | 4,820 | $5.70 | $27.5K | 30.0K | Form 4 ↗ |
Karp Daniel Executive VP, Corp. Dev. | Mar 31, 2026 | Award | 100,166 | — | — | 100.2K | Form 4 ↗ |
Karp Daniel Executive VP, Corp. Dev. | Mar 31, 2026 | Tax Withhold | 2,105 | $5.70 | $12.0K | 69.5K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Organon & Co. (OGN) is primarily owned by institutional investors, who hold approximately 77.3% of total shares outstanding. Company insiders own approximately 0.58%, while retail and public investors account for the remaining 22.12%.
The largest institutional shareholder of Organon & Co. is BLACKROCK, INC., holding approximately 31.88 million shares — equal to 12.36% of outstanding shares — as of March 31, 2025.
A total of 729 institutional investors currently hold OGN stock, with a combined institutional value of approximately $3.03 billion as of the most recent 13F filing period.
Frequently asked questions
OGN ownershipOrganon & Co. (OGN) is primarily owned by institutional investors, who hold approximately 77.3% of shares. The largest shareholder is BLACKROCK, INC. with a 12.36% stake. Company insiders hold 0.58%. Data sourced from SEC Form 13F as of March 31, 2025.