Organon & Co.
US ˙ NYSE

SecurityOGN / Organon & Co.
InstitutionPrivate Management Group Inc
Latest Disclosed Ownership4,374,108 shares
Latest Disclosed Value $ 26,200,907
Private Management Group Inc reports 0.62% increase in ownership of OGN / Organon & Co.

On May 8, 2026 - Private Management Group Inc filed a 13F-HR form disclosing ownership of 4,374,108 shares of Organon & Co. (US:OGN) valued at $26,200,907 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 4,347,073 shares of Organon & Co.. This represents a change in shares of 0.62% during the quarter. The current value of the position is $58,613,047 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-08 2026-03-31 13F ORGANON COMMON STOCK 68622V106 4,374,108 27,035 0.62 26,201 -15.94 0.7544
2026-02-11 2025-12-31 13F ORGANON COMMON STOCK 68622V106 4,347,073 1,204,979 38.35 31,169 -7.12 0.9074
2025-11-13 2025-09-30 13F ORGANON COMMON STOCK 68622V106 3,142,094 6,134 0.20 33,558 10.54 0.9991
2025-08-12 2025-06-30 13F ORGANON COMMON STOCK 68622V106 3,135,960 993,950 46.40 30,356 -4.82 1.0040
2025-05-07 2025-03-31 13F ORGANON COMMON STOCK 68622V106 2,142,010 22,722 1.07 31,895 0.87 1.1474
2025-01-27 2024-12-31 13F ORGANON COMMON STOCK 68622V106 2,119,288 225,420 11.90 31,620 -12.72 1.1494
2024-10-29 2024-09-30 13F ORGANON COMMON STOCK 68622V106 1,893,868 34,026 1.83 36,230 -5.89 1.2776
2024-08-06 2024-06-30 13F ORGANON COMMON STOCK 68622V106 1,859,842 -455,474 -19.67 38,499 -11.55 1.4801
2024-05-08 2024-03-31 13F ORGANON COMMON STOCK 68622V106 2,315,316 -19,922 -0.85 43,528 29.26 1.6489
2024-02-02 2023-12-31 13F ORGANON COMMON STOCK 68622V106 2,335,238 1,027,276 78.54 33,674 48.30 1.2887
2023-10-30 2023-09-30 13F ORGANON COMMON STOCK 68622V106 1,307,962 107,618 8.97 22,706 -9.10 0.9308
2023-08-07 2023-06-30 13F ORGANON COMMON STOCK 68622V106 1,200,344 84,975 7.62 24,979 -4.78 1.0618
2023-05-08 2023-03-31 13F ORGANON COMMON STOCK 68622V106 1,115,369 12,936 1.17 26,233 -14.80 1.1798
2023-02-03 2022-12-31 13F ORGANON COMMON STOCK 68622V106 1,102,433 -5,300 -0.48 30,791 18.79 1.3664
2023-02-07 2022-09-30 13F/A-2 ORGANON COMMON STOCK 68622V106 1,107,733 43,136 4.05 25,921 -27.86 1.2079
2023-02-06 2022-09-30 13F/A-1 ORGANON COMMON STOCK 68622V106 1,107,733 43,136 26 1.2079
2022-11-08 2022-09-30 13F ORGANON COMMON STOCK 68622V106 1,107,733 43,136 25,921 1.2079
2022-08-05 2022-06-30 13F ORGANON COMMON STOCK 68622V106 1,064,597 -1,735 -0.16 35,930 -3.54 1.5750
2022-05-06 2022-03-31 13F ORGANON COMMON STOCK 68622V106 1,066,332 7,787 0.74 37,247 15.56 1.5092
2022-02-08 2021-12-31 13F ORGANON COMMON STOCK 68622V106 1,058,545 133,654 14.45 32,233 6.28 1.2921
2021-11-09 2021-09-30 13F/A-1 ORGANON COMMON STOCK 68622V106 924,891 126,024 15.78 30,327 25.45 1.2659
2021-11-05 2021-09-30 13F ORGANON COMMON STOCK ADDED 68622V106 798,867 0 24,174 1.0595
2021-07-23 2021-06-30 13F ORGANON COMMON STOCK ADDED 68622V106 798,867 798,867 24,174 1.0595
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.