Karsten Winther

President · Vertiv Holdings Co

Rank #11,579 SEC EDGAR (United States) ↗ Files from United States

Details

Officer of the companySemiconductors & Electronic ComponentsVRTSEC CIK 0001917820

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

Disclosed holdings
$5.3M
1-day change
▲ 4.35%
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$2.3M – $7.0M2026-09-04

Insider activity Mar 28, 2024 – Dec 18, 2025

Karsten Winther is recorded in filings to the U.S. SEC via EDGAR as officer of the company, and reported 27 transactions between Mar 28, 2024 and Dec 18, 2025. 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)
None
0 purchases on file
Open-market sales (code S)
$14.93M
9 sales on file priced rows only
All reported transactions
27
every code, including awards and exercises
Pattern
Net seller 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.

Karsten Winther sold 54,200 Vertiv Holdings Co (VRT) shares for $5,230,420 on May 8, 2025

Unusual change in a direct holding

Flagged because the change that day in the shares this person holds directly was unusually large compared with their own earlier changes. The rows below are the open-market trades reported that day; under each share count is the balance the filing reports after that line.

Karsten Winther sold 54,200 Vertiv Holdings Co (VRT) shares for $5,230,420 on May 8, 2025
Date Insider Transaction Shares Price Value Filing
May 8, 2025 Karsten Winther S Open-market sale 53,000 held after: 18,846.84 $96.50 $5,114,500 SEC filing ↗
May 8, 2025 Karsten Winther S Open-market sale 1,200 held after: 18,846.84 $96.60 $115,920 SEC filing ↗

Total of the rows above: $5,230,420, 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 16 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. Vertiv Holdings Co VRT A Grant or awardnot a buy/sell decisionreported at zero 2 shares $0 at $0.00 SEC filing ↗
  2. Vertiv Holdings Co VRT A Grant or awardnot a buy/sell decisionreported at zero 1 shares $0 at $0.00 SEC filing ↗
  3. Vertiv Holdings Co VRT S Open-market sale 41,654 shares $5.59M at $134.21 SEC filing ↗
  4. Vertiv Holdings Co VRT M Option exercise or conversion × 4not a buy/sell decision 41,654 shares $904.5K
    The 4 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    4,795 $72.09 $345.7K SEC filing ↗
    29,756 $15.84 $471.3K SEC filing ↗
    7,000 $12.32 $86.2K SEC filing ↗
    103 $12.05 $1.2K SEC filing ↗
  5. Vertiv Holdings Co VRT A Grant or awardnot a buy/sell decisionreported at zero 2 shares $0 at $0.00 SEC filing ↗
  6. Vertiv Holdings Co VRT M Option exercise or conversionnot a buy/sell decision 5,500 shares $66.3K at $12.05 SEC filing ↗
  7. Vertiv Holdings Co VRT S Open-market sale 5,500 shares $518.8K at $94.33 SEC filing ↗
  8. Vertiv Holdings Co VRT M Option exercise or conversion × 2not a buy/sell decision 62,500 shares $767.4K
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    9,500 $12.05 $114.5K SEC filing ↗
    53,000 $12.32 $653.0K SEC filing ↗
  9. Vertiv Holdings Co VRT S Open-market sale × 2 54,200 shares $5.23M
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    1,200 $96.60 $115.9K SEC filing ↗
    53,000 $96.50 $5.11M SEC filing ↗
  10. Vertiv Holdings Co VRT A Grant or awardnot a buy/sell decisionreported at zero 2 shares $0 at $0.00 SEC filing ↗
  11. Vertiv Holdings Co VRT A Grant or awardnot a buy/sell decisionreported at zero 1 shares $0 at $0.00 SEC filing ↗
  12. Vertiv Holdings Co VRT A Grant or awardnot a buy/sell decisionreported at zero 1 shares $0 at $0.00 SEC filing ↗
  13. Vertiv Holdings Co VRT S Open-market sale × 5 44,924 shares $3.59M
    The 5 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    12,886 $78.08 $1.01M SEC filing ↗
    6,700 $79.22 $530.8K SEC filing ↗
    6,500 $80.12 $520.8K SEC filing ↗
    9,893 $80.89 $800.2K SEC filing ↗
    8,945 $82.25 $735.7K SEC filing ↗
  14. Vertiv Holdings Co VRT M Option exercise or conversionnot a buy/sell decision 30,204 shares $364.0K at $12.05 SEC filing ↗
  15. Vertiv Holdings Co VRT A Grant or awardnot a buy/sell decisionreported at zero 1 shares $0 at $0.00 SEC filing ↗
  16. Vertiv Holdings Co VRT F Shares withheld for taxesnot a buy/sell decision 950 shares $88.4K at $93.01 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
Vertiv Holdings Co VRT Class A Common Stock 18,852 $280.53 $5.3M 4 EDGAR ↗

Other insiders at the same companies

People who also file with the SEC at a company where Karsten Winther 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.

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

Profile record last refreshed Sep 8, 2026.