1 official reported 6 new trades
Interior Secretary Douglas J. Burgum disclosed five new trades, the largest a purchase of Nucleus Security, Inc. through Arthur Ventures Growth IV, LP valued at up to $250,000, dated April 8, 2026. The remaining transactions, all also dated April 8, involved purchases and one sale of holdings tied to several Arthur Ventures funds, each ranging from $1,001 to $15,000. Across all filings tracked by Open Cabinet, Burgum has reported 148 transactions, 104 of which were flagged as filed late under the filer's own certification.
Douglas J Burgum
Secretary · Department of the Interior · 6 new trades
| Arthur Ventures V, LP - zizzl Health | Purchase | $1,001-$15,000 |
| Arthur Ventures V, LP - Hudu Technologies, Inc | Purchase | $1,001-$15,000 |
| Arthur Ventures IV, LP - Decimal Technologies, Inc. (IRA) | Sale | $1,001-$15,000 |
| Arthur Ventures IV, LP - Decimal Technologies, Inc. | Sale | $1,001-$15,000 |
| Arthur Ventures Growth IV, LP - Nucleus Security, Inc. | Purchase | $1,001-$15,000 |
| Arthur Ventures Growth IV, LP - Nucleus Security, Inc. | Purchase | $100,001-$250,000 |
- Scott A Kupor — 4 new trades, posted July 25, 2026
- Markwayne Mullin — 89 new trades, posted July 25, 2026
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Source: U.S. Office of Government Ethics. Amounts are reported in ranges, as federal law requires. A late flag means the official certified knowing about the trade more than 30 days before reporting it.