Mark Attanasio
Profile Summary
Mark Attanasio is a California-based finance industry billionaire, born in 1957, with an estimated net worth of ~$1.9B RTB. Recent news coverage identifies him as the owner of the Milwaukee Brewers NewsAPI.
Business & SEC Activity
SEC EDGAR records list three insider filings for Attanasio: a Form 3 filed March 7, 2019, and Form 4 filings on April 23, 2019, and June 22, 2021 SEC EDGAR. A Form 3 discloses an insider's initial ownership in a public company, while a Form 4 reports subsequent changes in that ownership SEC EDGAR.
Political Activity
Federal Election Commission records show 89 contributions totaling $327,680 between December 4, 1987, and May 27, 2026 FEC. The party breakdown was $162,900 to Democratic recipients, $124,480 to recipients with an unknown party classification, $37,800 to Republican recipients, and $2,500 to Libertarian recipients FEC. His largest listed recipients were the Office of the Commissioner of Major League Baseball Political Action Committee ($50,000), the Democratic Senatorial Campaign Committee ($36,700), the Democratic National Committee ($31,200), the Obama Victory Fund ($28,500), and the Republican National Committee ($25,000) FEC.
These donations are matched to this person by name only, so some may belong to a different person with the same name: FEC filings can include a donor's employer and city, but our matching does not check them against what we know about this person.
In the News
On June 4, 2026, three listed news articles reported that Attanasio was included in the latest investment group for Athletes Unlimited Softball League NewsAPI. The articles were published by WMTV 15 News, WTMJ, and the Winnipeg Free Press NewsAPI.
U.S. Presence
Political Contributions
By Party
Every party on file is listed here. The bars are rounded for display; unrounded they total exactly $327,680.
Top Recipients
Matched by name only. These donations are matched to this person by name only, so some may belong to a different person with the same name: FEC filings can include a donor's employer and city, but our matching does not check them against what we know about this person.
SEC Filings
Associated Companies
Entities appearing alongside this person in SEC full-text search — an association, not necessarily ownership or control. Follow each link to the primary SEC record to judge for yourself.
Recent Insider Filings
Giving score
Not graded — insufficient data
We hold no charitable giving record for this person that we can count toward a score: no foundation filing we can tie to them and no sourced record of their direct giving. A gift reported elsewhere on this page, in the news or the summary, is not one we have recorded as a giving record yet. Without a record, a score would reflect how much data we hold about them and any Giving Pledge signature rather than recorded giving, so we do not give one. That says nothing about how much they give.
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All data is sourced from public records. Each section links to its original source.