Comparable stake leader
BlackRock, Inc.
SEC ownership of Organon & Co.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001821825.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
30 Jun 2026
- Public ticker
- OGN on NYSE
- Parsed ownership sources
-
13F and 13D/G
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
30 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001821825
- Issuer location
- Jersey City, NJ
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Organon & Co. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
30 Jun 2026
13F
13D/G
Lead comparable stake: 12%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 12%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
12%
Pentwater Capital Management LP
6.9%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.8%
VANGUARD CAPITAL MANAGEMENT LLC
5.3%
STATE STREET CORP
3.7%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
12%
from 13D/G
|
$434,049,961
32,056,866 shares
|
— | 30 Jun 2026 |
| Pentwater Capital Management LP |
13F
13D/G
Company
|
6.9%
from 13D/G
|
$245,074,000
18,100,000 shares
|
— | 30 Jun 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Portfolio Management
|
5.8%
from 13D/G
|
$204,888,878
15,132,118 shares
|
— | 30 Jun 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Capital Management
|
5.3%
from 13D/G
|
$161,259,572
11,909,865 shares
|
— | 30 Jun 2026 |
| STATE STREET CORP |
13F
Company
|
3.7%
|
$130,787,883
9,659,371 shares
|
— | 30 Jun 2026 |
| GOLDMAN SACHS GROUP INC |
13F
Company
|
2%
|
$70,394,490
5,199,002 shares
|
— | 30 Jun 2026 |
| UBS Group AG |
13F
Company
|
1.9%
|
$65,757,403
4,856,529 shares
|
— | 30 Jun 2026 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
1.8%
|
$65,219,903
4,815,610 shares
|
— | 30 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$51,632.
Buys
$501,755
Insiders: 1
Sells
$553,387
Insiders: 2
Net
-$51,632
Shares: +24,191
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 65,400
Shares: 41,209
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 14,761 | $0 | $200,307 | -$200,307 |
| 3-6 | 0 | 26,448 | $0 | $353,080 | -$353,080 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 65,400 | 0 | $501,755 | $0 | +$501,755 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 33 reporting-owner rows connected to Organon & Co.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
33
Largest Forms 3/4/5 holder
Kevin Ali
Net 12M change
-$51,632
Latest report
11 Aug 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Kevin Ali | Chief Executive Officer, Director | $2,489,447 | Filing P/S | 05 May 2025 | ||
| Matthew M. Walsh | Chief Financial Officer | $1,525,388 | Mixed | 31 Mar 2026 | ||
| Carrie S. Cox | Executive Chair, Director | $1,340,676 | +$501,755 | +60% | Mixed | 12 Nov 2025 |
| Susanne Fiedler | Chief Commercial Officer | $1,080,850 | Mixed | 03 Sep 2024 | ||
| Joseph T. Morrissey Jr. | Interim CEO | $882,791 | Mixed | 31 Mar 2026 | ||
| Rachel A. Stahler | Chief Information Officer | $832,474 | Mixed | 31 Mar 2026 | ||
| Dr. Juan Camilo Arjona Ferreira | Head of R&D & CMO | $764,097 | Mixed | 11 Aug 2026 | ||
| Martha E. McGarry | Director | $756,437 | Mixed | 07 Jun 2024 | ||
| Aaron Falcione | Chief Human Resources Officer | $727,260 | Mixed | 31 Mar 2026 | ||
| Sandra Milligan | Head of Research & Development | $723,042 | Mixed | 04 May 2023 | ||
| Kirke Weaver | Gen. Counsel & Corp. Secy. | $664,222 | Mixed | 31 Mar 2026 | ||
| Shalini Sharp | Director | $633,063 | Mixed | 12 Jun 2026 | ||
| Helene D. Gayle | Director | $629,534 | Mixed | 12 Jun 2026 | ||
| Cynthia M. Patton | Director | $629,534 | Mixed | 12 Jun 2026 | ||
| LAZARUS ROCHELLE B | Director | $629,534 | Mixed | 12 Jun 2026 | ||
| Alan Ezekowitz | Director | $629,534 | Mixed | 12 Jun 2026 | ||
| Philip Ozuah | Director | $629,534 | Mixed | 12 Jun 2026 | ||
| Grace Puma Whiteford | Director | $629,534 | Mixed | 13 Jun 2025 | ||
| Robert Essner | Director | $629,534 | Mixed | 12 Jun 2026 | ||
| Deborah R. Leone | Director | $629,534 | Mixed | 12 Jun 2026 |
Recent insider transactions for Organon & Co.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Dr. Juan Camilo Arjona Ferreira | OGN | Common Stock | Tax liability | -9.95% | -4,134 | 37,432 | 11 Aug 2026 | Direct | ||
| Dr. Juan Camilo Arjona Ferreira | OGN | Common Stock | Options Exercise | 38.3% | 11,519 | 41,566 | 11 Aug 2026 | Direct | ||
| Dr. Juan Camilo Arjona Ferreira | OGN | Restricted Stock Units | Options Exercise | 11,519 | 0 | 11 Aug 2026 | Direct | |||
| Juliana Papa Drinane | OGN | Common Stock | Sale | -44.4% | $200,307 | $13.57 | -14,761 | 18,475 | 05 Aug 2026 | Direct |
| Shalini Sharp | OGN | Phantom Stock | Award | 28.1% | 17,857 | 81,496 | 12 Jun 2026 | Direct | ||
| Ramona Sequeira | OGN | Phantom Stock | Award | 80.8% | 17,857 | 39,951 | 12 Jun 2026 | Direct | ||
| Cynthia M. Patton | OGN | Phantom Stock | Award | 28.2% | 17,857 | 81,141 | 12 Jun 2026 | Direct | ||
| Philip Ozuah | OGN | Phantom Stock | Award | 28.2% | 17,857 | 81,141 | 12 Jun 2026 | Direct | ||
| Deborah R. Leone | OGN | Phantom Stock | Award | 28.2% | 17,857 | 81,141 | 12 Jun 2026 | Direct | ||
| Lazarus Rochelle B | OGN | Phantom Stock | Award | 28.2% | 17,857 | 81,141 | 12 Jun 2026 | Direct | ||
| Helene D. Gayle | OGN | Phantom Stock | Award | 28.2% | 17,857 | 81,141 | 12 Jun 2026 | Direct | ||
| Alan Ezekowitz | OGN | Phantom Stock | Award | 28.2% | 17,857 | 81,141 | 12 Jun 2026 | Direct | ||
| Robert Essner | OGN | Phantom Stock | Award | 28.2% | 17,857 | 81,141 | 12 Jun 2026 | Direct | ||
| Lynette Holzbaur | OGN | Common Stock | Sale | -100% | $353,080 | $13.35 | -26,448 | 0 | 06 May 2026 | Direct |
| Lynette Holzbaur | OGN | Common Stock | Other | 0.17% | 45.94 | 26,448 | 06 May 2026 | Direct | ||
| Juliana Papa Drinane | OGN | Common Stock | Tax liability | -17.5% | -5,636 | 26,614 | 31 Mar 2026 | Direct | ||
| Juliana Papa Drinane | OGN | Common Stock | Options Exercise | 81.3% | 16,451 | 36,687 | 31 Mar 2026 | Direct | ||
| Juliana Papa Drinane | OGN | Restricted Stock Units | Options Exercise | -100% | -16,451 | 0 | 31 Mar 2026 | Direct | ||
| Juliana Papa Drinane | OGN | Restricted Stock Units | Award | 125,208 | 125,208 | 31 Mar 2026 | Direct | |||
| Dr. Juan Camilo Arjona Ferreira | OGN | Common Stock | Tax liability | -13.8% | -4,820 | 30,047 | 31 Mar 2026 | Direct | ||
| Dr. Juan Camilo Arjona Ferreira | OGN | Common Stock | Options Exercise | 62.6% | 13,431 | 34,867 | 31 Mar 2026 | Direct | ||
| Dr. Juan Camilo Arjona Ferreira | OGN | Restricted Stock Units | Options Exercise | -33.3% | -13,431 | 26,864 | 31 Mar 2026 | Direct | ||
| Dr. Juan Camilo Arjona Ferreira | OGN | Restricted Stock Units | Award | 200,333 | 200,333 | 31 Mar 2026 | Direct | |||
| Daniel Karp | OGN | Common Stock | Tax liability | -8.02% | -5,659 | 64,938 | 31 Mar 2026 | Direct | ||
| Daniel Karp | OGN | Common Stock | Options Exercise | 33.7% | 18,053 | 71,653 | 31 Mar 2026 | Direct | ||
| Daniel Karp | OGN | Restricted Stock Units | Options Exercise | -100% | -18,053 | 0 | 31 Mar 2026 | Direct | ||
| Daniel Karp | OGN | Restricted Stock Units | Award | 100,166 | 100,166 | 31 Mar 2026 | Direct | |||
| Rachel A. Stahler | OGN | Common Stock | Tax liability | -5.65% | -6,463 | 108,010 | 31 Mar 2026 | Direct | ||
| Rachel A. Stahler | OGN | Common Stock | Options Exercise | 18.6% | 18,867 | 120,322 | 31 Mar 2026 | Direct | ||
| Rachel A. Stahler | OGN | Restricted Stock Units | Options Exercise | -100% | -18,867 | 0 | 31 Mar 2026 | Direct | ||
| Rachel A. Stahler | OGN | Restricted Stock Units | Award | 183,639 | 183,639 | 31 Mar 2026 | Direct | |||
| Matthew M. Walsh | OGN | Common Stock | Tax liability | -5.48% | -11,507 | 198,580 | 31 Mar 2026 | Direct | ||
| Matthew M. Walsh | OGN | Common Stock | Options Exercise | 18% | 33,593 | 220,126 | 31 Mar 2026 | Direct | ||
| Matthew M. Walsh | OGN | Restricted Stock Units | Options Exercise | -100% | -33,593 | 0 | 31 Mar 2026 | Direct | ||
| Matthew M. Walsh | OGN | Restricted Stock Units | Award | 404,840 | 321,368 | 31 Mar 2026 | Direct | |||
| Aaron Falcione | OGN | Common Stock | Tax liability | -6.13% | -6,140 | 94,072 | 31 Mar 2026 | Direct | ||
| Aaron Falcione | OGN | Common Stock | Options Exercise | 20.5% | 17,925 | 105,265 | 31 Mar 2026 | Direct | ||
| Aaron Falcione | OGN | Restricted Stock Units | Options Exercise | -100% | -17,925 | 0 | 31 Mar 2026 | Direct | ||
| Aaron Falcione | OGN | Restricted Stock Units | Award | 166,944 | 166,944 | 31 Mar 2026 | Direct | |||
| Kirke Weaver | OGN | Common Stock | Tax liability | -5.92% | -5,275 | 83,835 | 31 Mar 2026 | Direct | ||
| Kirke Weaver | OGN | Common Stock | Options Exercise | 23.8% | 18,513 | 96,147 | 31 Mar 2026 | Direct | ||
| Kirke Weaver | OGN | Restricted Stock Units | Options Exercise | -100% | -18,513 | 0 | 31 Mar 2026 | Direct | ||
| Kirke Weaver | OGN | Restricted Stock Units | Award | 183,639 | 183,639 | 31 Mar 2026 | Direct | |||
| Vittorio Nisita | OGN | Common Stock | Tax liability | -6.4% | -4,453 | 65,100 | 31 Mar 2026 | Direct | ||
| Vittorio Nisita | OGN | Common Stock | Options Exercise | 21.5% | 13,000 | 73,494 | 31 Mar 2026 | Direct | ||
| Vittorio Nisita | OGN | Restricted Stock Units | Options Exercise | -100% | -13,000 | 0 | 31 Mar 2026 | Direct | ||
| Vittorio Nisita | OGN | Restricted Stock Units | Award | 125,208 | 125,208 | 31 Mar 2026 | Direct | |||
| Lynette Holzbaur | OGN | Common Stock | Tax liability | -12.6% | -3,126 | 21,601 | 31 Mar 2026 | Direct | ||
| Lynette Holzbaur | OGN | Common Stock | Options Exercise | 63.2% | 10,967 | 28,316 | 31 Mar 2026 | Direct | ||
| Lynette Holzbaur | OGN | Restricted Stock Units | Options Exercise | -100% | -10,967 | 0 | 31 Mar 2026 | Direct |
* marks a reported price that did not pass the local price check.