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Compensation 990 is an independent service that uses public IRS Form 990 filings as its source data. We clean and standardize this information, but the original filings may contain errors or omissions. Years on this site refer to the organization’s fiscal year end date on the filing.

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Employees Open Source Initiative Stefano Zacchiroli

Stefano Zacchiroli

Trustee/directorFormer

Director at Open Source Initiative

Fiscal year ended December 31, 2017. Published on January 24, 2026.

$0
2017

Total compensation

Stefano Zacchiroli has been listed as an employee of Open Source Initiative in Form 990 filings since fiscal year 2017.

Annual compensation details

$0
Director
2017

Compare the compensation of Stefano Zacchiroli to:

2017

Other employees at Open Source Initiative

Patrick Masson
Secretary and General Manager
$100,000
$100,000 from orgNo related compNo other comp
Paul Tagliamonte
Director
$0
Josh Simmons
Director
$0
Leslie Hawthorn
Director
$0
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Revisions to this profile

January 24, 2026:
2017 Open Source Initiative 990 published

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