CalAccess Runway

Follow committees, donors, candidates, filings, and ballot measure money in one place.

Built around California Secretary of State filings, with entity pages that let you move from one record into the wider money network around it.

Explore homepageRead methodology

Explore

  • Homepage
  • Committees
  • Donors
  • Candidates

More Data

  • Ballot measures
  • Committee filings
  • Top donors
  • Race browse

About The Data

  • Methodology
  • Privacy Policy
Built from California Secretary of State filings. © 2026 PubSys.
CalAccess Runway
HomeCommitteesDonorsCandidatesBallot measuresMethodology
HomeCommitteesDonorsCandidatesBallot measuresMethodology
RunwayDonorsDUNCAN L. MATTESON

Donor header

DUNCAN L. MATTESON

Individual · REDWOOD CITY, CA · THE MATTESON COMPANIES · REAL ESTATE INVESTOR

$17,000 total given · Largest contribution $5,000

Giving is moderately concentrated across leading recipients.

Active cycles

1999-20002001-20022003-20042005-20062007-20082009-20102011-20122013-20142015-20162017-20182019-20202021-20222023-20242025-2026

Panel 2 • Finance overview

Total given

$17,000

First seen Sep 20, 2006 · Last activity Oct 6, 2014

Contribution footprint

8 recipients

13 contributions · Avg $1,308

Concentration

Top recipient 29.4%

Top 3 58.8%

Top 10 100%

Total givingReference baseline
1
Apr 2021Dec 2022Jul 2024Mar 2026

Spike markers

  1. 1May 2008 · 3 notable contributions
    • REPAIR CALIFORNIA SPONSORED BY BAY AREA COUNCIL · $5,000
    • LLOYD FOR STATE ASSEMBLY, JUDY · $2,500
    • BAKER FOR ASSEMBLY 2014, CATHARINE · $2,500

Panel 3 • Top recipients

RecipientTotalShare*CountDatesDetails
REPAIR CALIFORNIA SPONSORED BY BAY AREA COUNCIL$5,00029.4%1Nov 2009 - Nov 2009
LLOYD FOR STATE ASSEMBLY, JUDY$2,50014.7%3Mar 2007 - May 2008
BAKER FOR ASSEMBLY 2014, CATHARINE$2,50014.7%2Oct 2013 - Oct 2014
HOUSTON FOR CONTRA COSTA SUPERVISOR, GUY$2,00011.8%2Dec 2007 - May 2008
MALDONADO FOR SENATE, ABEL$2,00011.8%2Mar 2007 - Feb 2008
HOUSTON FOR ASSEMBLY 2006, GUY$1,0005.9%1Sep 2006 - Sep 2006
BRYSON FOR ASSEMBLY 2014, ANNA$1,0005.9%1Apr 2014 - Apr 2014
HOUSTON, FRIENDS OF GUY$1,0005.9%1Jun 2007 - Jun 2007
Showing 8 of 8

* Share is percent of donor total in the selected scope. Page rows are a subset and typically do not sum to 100%.

RunwayDonorsDUNCAN L. MATTESON

Donor header

DUNCAN L. MATTESON

Individual · REDWOOD CITY, CA · THE MATTESON COMPANIES · REAL ESTATE INVESTOR

$17,000 total given · Largest contribution $5,000

Giving is moderately concentrated across leading recipients.

Active cycles

1999-20002001-20022003-20042005-20062007-20082009-20102011-20122013-20142015-20162017-20182019-20202021-20222023-20242025-2026

Panel 2 • Finance overview

Total given

$17,000

First seen Sep 20, 2006 · Last activity Oct 6, 2014

Contribution footprint

8 recipients

13 contributions · Avg $1,308

Concentration

Top recipient 29.4%

Top 3 58.8%

Top 10 100%

Total givingReference baseline
1
Apr 2021Dec 2022Jul 2024Mar 2026

Spike markers

  1. 1May 2008 · 3 notable contributions
    • REPAIR CALIFORNIA SPONSORED BY BAY AREA COUNCIL · $5,000
    • LLOYD FOR STATE ASSEMBLY, JUDY · $2,500
    • BAKER FOR ASSEMBLY 2014, CATHARINE · $2,500

Panel 3 • Top recipients

RecipientTotalShare*CountDatesDetails
REPAIR CALIFORNIA SPONSORED BY BAY AREA COUNCIL$5,00029.4%1Nov 2009 - Nov 2009
LLOYD FOR STATE ASSEMBLY, JUDY$2,50014.7%3Mar 2007 - May 2008
BAKER FOR ASSEMBLY 2014, CATHARINE$2,50014.7%2Oct 2013 - Oct 2014
HOUSTON FOR CONTRA COSTA SUPERVISOR, GUY$2,00011.8%2Dec 2007 - May 2008
MALDONADO FOR SENATE, ABEL$2,00011.8%2Mar 2007 - Feb 2008
HOUSTON FOR ASSEMBLY 2006, GUY$1,0005.9%1Sep 2006 - Sep 2006
BRYSON FOR ASSEMBLY 2014, ANNA$1,0005.9%1Apr 2014 - Apr 2014
HOUSTON, FRIENDS OF GUY$1,0005.9%1Jun 2007 - Jun 2007
Showing 8 of 8

* Share is percent of donor total in the selected scope. Page rows are a subset and typically do not sum to 100%.

Scope: All time60 points
Scope: All time60 points