Quick Takeaways
- William George Brumder II has 1 issuer position tracked on this page.
- Estimated disclosed ownership value: $26,986,620.
- Recent insider filing activity is available below.
- Info
- Significant Ownership
- Insider Ownership
Insider Trading & Ownership of William George Brumder II
- Location
- New York, NY
- Summary
- The estimated net worth of William George Brumder II is at least $26,986,620 dollars as of 26 Sep 2025. William George Brumder II is the 10%+ Owner of GoPro, Inc. and owns shares of GoPro, Inc. (GPRO) stock worth about $26.99M.
- Signature
- /s/ William George Brumder II
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow William George Brumder II and return when a new Insider Trading filing changes the record on this page.
This uses the existing product follow flow to surface future filing-backed changes without guessing what they mean.
What Changed
- Largest disclosed position: GoPro, Inc. ($26,986,620).
- Past-year value change for that position: -$29,880.
Why This Matters
- This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
- You can cross-check role, issuer, and filing chronology directly against the SEC source.
Source Evidence
Filed on Form 4
See Original Filing
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
Ownership of William George Brumder II
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| GPRO | GoPro, Inc. | 10%+ Owner | $26,986,620 | -$29,880 | -0.11% | 19 Sep 2025 |
Insider Transactions Reported by William George Brumder II:
| Sym | Company | Class | Transaction | % | Value $ | * Price $ | Shares | Shares After | Date | Ownership |
|---|
* An asterisk sign (*) next to the price indicates that the price is likely invalid.