Kirke Weaver

Kirke Weaver

General Counsel · Organon & Co.

Rank #27,220 SEC EDGAR (United States) ↗ Files from United States

Details

Officer of the companyPharmaceuticals & BiotechnologyOGNSEC CIK 0001959622

Computed from SEC EDGAR filings and closing prices — not copied from any wealth ranking. Dataset . How we calculate this.

Disclosed holdings
$1.1M
1-day change
▲ 0.07%
Positions on file
1
issuers disclosed in Forms 3/4/5 and Schedules 13D/G

Disclosed holdings over time 53 weekly points

What the 1 currently disclosed position would have been worth at each week’s closing price. A rising line means the shares got more valuable, not that this person bought more.

How the line is built

Share counts are as last reported to the SEC and held constant; only prices move.

2025-09-05$463.7K – $1.1M2026-09-04

Insider activity Mar 31, 2024 – Mar 29, 2026

Kirke Weaver is recorded in filings to the U.S. SEC via EDGAR as officer of the company, and reported 23 transactions between Mar 31, 2024 and Mar 29, 2026. The buy and sell totals below count only codes P, S.

Why the other codes are excluded

Share awards (A), shares withheld to pay tax (F), option exercises (M) and gifts (G) also appear in the table, but they are consequences of a pay package or a private transfer, not a decision to buy or sell on the open market. Counting them would turn this into a compensation ranking.

Open-market buys (code P)
$74.1K
1 purchase on file priced rows only
Open-market sales (code S)
None
0 sales on file
All reported transactions
23
every code, including awards and exercises
Pattern
Net buyer in the final 12 months of the window
last 12 months of the window

Events from filings

Detected automatically in the filings linked below. Each headline is built from the numbers in those filings, not written by a model. Newest first; events older than 45 days stay listed and are marked as older.

5 insiders bought Organon & Co. (OGN) shares worth $623,042 between May 5, 2025 and May 14, 2025

Cluster buying

5 different insiders made 5 open-market purchases of this company’s shares within a short window. Each row below is one reported trade.

5 insiders bought Organon & Co. (OGN) shares worth $623,042 between May 5, 2025 and May 14, 2025
Date Insider Transaction Shares Price Value Filing
May 5, 2025 Matthew M. Walsh P Open-market purchase 11,400 held after: 144,484 $8.82 $100,548 SEC filing ↗
May 5, 2025 Kevin Ali P Open-market purchase 34,000 held after: 282,731.16 $8.81 $299,540 SEC filing ↗
May 6, 2025 Kirke Weaver P Open-market purchase 8,045 held after: 52,489 $9.21 $74,094 SEC filing ↗
May 7, 2025 Aaron Falcione P Open-market purchase 5,500 held after: 62,973.66 $8.77 $48,235 SEC filing ↗
May 14, 2025 Carrie Smith Cox P Open-market purchase 12,469 held after: 12,469 $8.07 $100,625 SEC filing ↗

Total of the rows above: $623,042, in the currency the filings report.

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Reported transactions

Price 0.00 is a real reported figure on gifts (G) and share awards (A) — not a missing number. The 25 most recent rows are grouped into 13 lines by date, company and transaction type — open a line to see every lot with its own source link. We hold 27 on file in total. See the full history on EDGAR ↗

How to read this list

Every row is one line of one Form 4 or Form 5, with the filing it came from. Where the record carries no price at all we leave the cell empty instead of guessing one.

The shares and money on a grouped line add up only the lots listed inside that line, and only when every one of them carries the figure. Where a group mixes more than one reporting currency we leave the money blank rather than convert — no source publishes the rate that conversion would need.

  1. Organon & Co. OGN F Shares withheld for taxes × 2not a buy/sell decision 5,275 shares $30.1K
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    3,508 $5.70 $20.0K SEC filing ↗
    1,767 $5.70 $10.1K SEC filing ↗
  2. Organon & Co. OGN M Option exercise or conversion × 2not a buy/sell decisionreported at zero 18,513 shares $0
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    12,312 $0.00reported at zero $0 SEC filing ↗
    6,201 $0.00reported at zero $0 SEC filing ↗
  3. Organon & Co. OGN M Option exercise or conversionnot a buy/sell decisionreported at zero 7,757 shares $0 at $0.00 SEC filing ↗
  4. Organon & Co. OGN F Shares withheld for taxesnot a buy/sell decision 2,210 shares $12.9K at $5.84 SEC filing ↗
  5. Organon & Co. OGN F Shares withheld for taxes × 2not a buy/sell decision 8,578 shares $61.6K
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    1,763 $7.23 $12.7K SEC filing ↗
    6,815 $7.17 $48.9K SEC filing ↗
  6. Organon & Co. OGN A Grant or award × 2not a buy/sell decisionreported at zero 28,111 shares $0
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    6,186 $0.00reported at zero $0 SEC filing ↗
    21,925 $0.00reported at zero $0 SEC filing ↗
  7. Organon & Co. OGN P Open-market purchase 8,045 shares $74.1K at $9.21 SEC filing ↗
  8. Organon & Co. OGN M Option exercise or conversion × 4not a buy/sell decisionreported at zero 21,376 shares $0
    The 4 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    4,294 $0.00reported at zero $0 SEC filing ↗
    3,125 $0.00reported at zero $0 SEC filing ↗
    6,200 $0.00reported at zero $0 SEC filing ↗
    7,757 $0.00reported at zero $0 SEC filing ↗
  9. Organon & Co. OGN F Shares withheld for taxes × 4not a buy/sell decision 6,092 shares $88.4K
    The 4 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    891 $14.51 $12.9K SEC filing ↗
    1,767 $14.51 $25.6K SEC filing ↗
    1,224 $14.51 $17.8K SEC filing ↗
    2,210 $14.51 $32.1K SEC filing ↗
  10. Organon & Co. OGN M Option exercise or conversionnot a buy/sell decisionreported at zero 1,248 shares $0 at $0.00 SEC filing ↗
  11. Organon & Co. OGN F Shares withheld for taxesnot a buy/sell decision 356 shares $7.0K at $19.61 SEC filing ↗
  12. Organon & Co. OGN F Shares withheld for taxes × 2not a buy/sell decision 2,115 shares $39.8K
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    891 $18.80 $16.8K SEC filing ↗
    1,224 $18.80 $23.0K SEC filing ↗
  13. Organon & Co. OGN M Option exercise or conversion × 2not a buy/sell decisionreported at zero 7,419 shares $0
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    4,294 $0.00reported at zero $0 SEC filing ↗
    3,125 $0.00reported at zero $0 SEC filing ↗

Disclosed holdings

Shares is the amount on the form; value is that amount times the closing price shown. Rows with no closing price are left blank, so they may add up to less than the headline figure.

What is not counted here

Each row is one filing you can open. Private companies, real estate, bonds and crypto are not in SEC insider filings and are therefore not counted here.

Equity positions disclosed to the SEC, with the source filing behind each row.
Issuer Ticker Security Shares Close Value Form Reported Filing
Organon & Co. OGN Common Stock 79,401 $13.78 $1.1M 4 EDGAR ↗

Other insiders at the same companies

People who also file with the SEC at a company where Kirke Weaver reports shares.

Sharing a filing does not mean they work together day to day — it means both names appear on the same issuer’s insider record.

Sources

The filings linked in the tables above are the sources for every figure on this page.

Portrait photograph: Organon & Co. (company-published photograph). Original file page on organon.com ↗

Think a number here is wrong? Open the linked filing and compare — how to report it.

Profile record last refreshed Sep 8, 2026.