William MacMillan
Profile Summary
William MacMillan is a U.S. citizen born in 1954 who is associated with Colorado and the diversified industry. He has an estimated net worth of ~$1.7 billion. RTB
Business & SEC Activity
The available data classifies MacMillan's industry as diversified but does not provide specific details about the businesses or investments that built his wealth.
Philanthropy
The@macmillan Family Foundation Inc., based in New York, reported $473.6 million in assets, $82.6 million in revenue, $30.4 million in expenses, and $24.7 million in grants paid for tax year 2023. Foundation Form 990 records are annual nonprofit tax filings that report finances such as assets, revenue, expenses, and grants. ProPublica 990
Political Activity
The available records represent at least 100 federal contributions and cover only the most recent 100 contributions on file. Those sampled records total at least $18,723.24; the largest listed recipients were Donald J. Trump for President, Inc. ($5,650) and Trump Victory ($5,400), and the sampled party breakdown listed $6,325 for Republicans, $468.54 for Democrats, and $2,000 for an unidentified party classification. FEC
In the News
No validated news articles were provided in the available data.
U.S. Presence
Philanthropy
Foundations are matched to a person by name, not by trustee records — so a same-surname family foundation can land here in error. Every entity below links to its full IRS filing; if one doesn’t belong, tell us at hello@skylarkcreations.com and we’ll pull it.
Political Contributions
These figures cover the 100 most recent federal contributions on file, not the full record. The total, party split, top recipients and dates below are all computed over that sample, so each is a floor rather than a complete figure.
By Party (in the sample)
Top Recipients (in the sample)
Matched to this person by contributor name as filed with the FEC. Contributions filed under the same name by someone else can appear here; we do not yet corroborate against employer or state.
Score Breakdown
The PBS is a weighted average of 2 components. The formula is open and versioned — the weight percentages below show how much each component contributes to the final score.
Evidenced charitable giving — built on what they actually give each year, not parked assets. Dominated by generosity (annual giving relative to net worth — the share of your fortune you give), plus the absolute scale of that giving, plus a small nudge for signing the Giving Pledge (a commitment, not a realized action).
Data: ProPublica 990 charitable disbursements, net worth, The Giving Pledge registry
How much sourced, public accountability data exists — net worth, political contributions, SEC filings, foundation 990s, news coverage, and a verified profile. More public disclosure scores higher.
Data: FEC, SEC EDGAR, ProPublica 990s, GDELT / NewsAPI, Wikidata
Formula (v2): PBS = 65% x Philanthropy + 35% x Transparency
Scored on 8/31/2026 on a 0–100 scale. The score uses only the signals we have populated data for. Goal Impact, Controversy, and Community Approval are deferred until that data exists — Phase 1 goal adoption, controversy detection, and community votes respectively.
All data is sourced from public records. Each section links to its original source.