Derek Brummer

President · RADIAN GROUP INC

Rank #10,926 SEC EDGAR (United States) ↗ Files from United States

Details

Officer of the companyInsuranceRDNSEC CIK 0001578586

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

Disclosed holdings
$5.8M
1-day change
▼ 0.41%
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$5.1M – $6.2M2026-09-04

Insider activity May 13, 2024 – Dec 6, 2024

Derek Brummer is recorded in filings to the U.S. SEC via EDGAR as officer of the company, and reported 14 transactions between May 13, 2024 and Dec 6, 2024. 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)
$3.97M
5 sales on file priced rows only
All reported transactions
14
every code, including awards and exercises
Pattern
No transaction in the final 12 months of the window
last 12 months of the window

Reported transactions

Price 0.00 is a real reported figure on gifts (G) and share awards (A) — not a missing number. The 14 most recent rows are grouped into 11 lines by date, company and transaction type — open a line to see every lot with its own source link.

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. RADIAN GROUP INC RDN S Open-market sale 14,500 shares $499.1K at $34.42 SEC filing ↗
  2. RADIAN GROUP INC RDN S Open-market sale 14,705 shares $509.5K at $34.65 SEC filing ↗
  3. RADIAN GROUP INC RDN S Open-market sale 35,153 shares $1.24M at $35.36 SEC filing ↗
  4. RADIAN GROUP INC RDN F Shares withheld for taxesnot a buy/sell decision 8,565 shares $256.6K at $29.96 SEC filing ↗
  5. RADIAN GROUP INC RDN M Option exercise or conversionnot a buy/sell decision 11,790 shares $182.0K at $15.44 SEC filing ↗
  6. RADIAN GROUP INC RDN S Open-market sale 35,000 shares $1.10M at $31.33 SEC filing ↗
  7. RADIAN GROUP INC RDN S Open-market sale 20,000 shares $626.6K at $31.33 SEC filing ↗
  8. RADIAN GROUP INC RDN M Option exercise or conversion × 4not a buy/sell decisionreported at zero 35,914 shares $0
    The 4 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    10,284 $0.00reported at zero $0 SEC filing ↗
    11,017 $0.00reported at zero $0 SEC filing ↗
    10,486 $0.00reported at zero $0 SEC filing ↗
    4,127 $0.00reported at zero $0 SEC filing ↗
  9. RADIAN GROUP INC RDN F Shares withheld for taxesnot a buy/sell decisionreported at zero 17,971 shares $0 at $0.00 SEC filing ↗
  10. RADIAN GROUP INC RDN M Option exercise or conversionnot a buy/sell decisionreported at zero 115,108 shares $0 at $0.00 SEC filing ↗
  11. RADIAN GROUP INC RDN F Shares withheld for taxesnot a buy/sell decision 47,425 shares $1.49M at $31.43 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
RADIAN GROUP INC RDN Common Stock 157,330 $36.66 $5.8M 4 EDGAR ↗

Other insiders at the same companies

People who also file with the SEC at a company where Derek Brummer 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.

Logo credits

Logo credits. Logos on this page are shown to identify the company they belong to; trademarks remain the property of their owner. Files whose licence requires naming the author are listed here. Logos in the public domain or released under CC0 are not listed, because those licences ask for nothing.

RADIAN GROUP INC: Phillyfan1500 / CC BY-SA 4.0, via Wikimedia Commons ↗