Sara Mattern

Officer

Fiscal year ended December 31, 2024. Published on January 25, 2026.

2024

Total compensation

Sara Mattern has been listed as an employee of Greentown Collaborative Inc. in Form 990 filings since fiscal year 2023.

Annual compensation details

Clerk

2024

Secretary and Clerk

2023

2024

Other employees at Greentown Collaborative Inc.

Kevin Knobloch

President and CEO (Until JULY 2024)

$235,643

$219,974 from orgNo related comp$15,669 other

David Pruner

Tex-E Executive Dir(Until SEPT 2024)

$234,358

$215,384 from orgNo related comp$18,974 other

Joubin Hatamzadeh

Chief Operating Officer

$230,071

$223,211 from orgNo related comp$6,860 other

Julia Travaglini

Senior Vice President, Marketing and Communications

$203,934

$172,711 from orgNo related comp$31,223 other

Aisling Carlson

Senior Vice President, Partnerships

$203,520

$174,980 from orgNo related comp$28,540 other

Timmeko Love

Senior Vice President and HEAD of Houston

$185,985

$170,770 from orgNo related comp$15,215 other

Mitchell Bilczewski

ASST Treasurer and Controller

$165,381

$150,907 from orgNo related comp$14,474 other

Greg Ralich

Vice President, LABS and Safety

$150,968

$132,862 from orgNo related comp$18,106 other

Brian Dowling

SR Director, Facilities

$131,148

$118,277 from orgNo related comp$12,871 other

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Revisions to this profile

January 25, 2026:

2024 Greentown Collaborative Inc. 990 published

January 25, 2026:

2023 Greentown Collaborative Inc. 990 published

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