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Governance Register
US nonprofit · EIN 680321106 · Sacramento, CAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 680321106) - NTEE activity code, address.Board and officers IRS Form 990 annual filings, Part VII (directors, trustees, officers, key employees), read year by year to observe tenure.Latest return IRS Form 990 series e-file data - 990 for the year to 30 June 2025: assets, liabilities, staff, website, telephone, pay.Renewal outlook Computed by Governance Register from the observed filing history and filed revenue (us-approach-v4-clean). Not a statement that the organisation is recruiting.Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

Powerhouse Science Center's network

18 people20 organisationsi18 people and 20 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (18). Violet dotted lines (20) are likely: the same full name sits on the current board of another organisation in the same register and region. Form 990 filings give names without a person identifier; SEC insider filings carry a CIK. It may be a different person.

The board

18 listediTime on the board is observed from the annual filings: the IRS files no appointment date, so the bar counts years from the first filing the person appears on - a lower bound, not a filed start date. Names are exactly as filed. The IRS publishes no person identifier, so this edition does not yet link a person across organisations in the tables. The network map shows same-name matches as likely links only, never as confirmed.Tenure and departures are observed across annual filings. Observed tenure is a lower bound - a member may have joined before the first year on record. The organisation reported 18 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Andrew Kramer (also filed as Andy Kramer)Director2018
8 yrs
Anne StainesCompany secretary2018
8 yrs
Binda MangatDirector2018
8 yrs
Bradley SimmonsVice President2023
3 yrs
Celeste ChinDirector2018
8 yrs
Dr Judy KjelstromDirector2018
8 yrs
Dusty MillerDirector2018
8 yrs
Farres EverlyDirector2019
7 yrs
Harry LaswellDirector2018
8 yrs
Hon Darrell SteinbergDirector2019
7 yrs
Hon Phil SernaDirector2022
4 yrs
Jeff GrubbsTreasurer2022
4 yrs
Johan OttoDirector2018
8 yrs
Melissa FosterDirector2018
8 yrs
Michael ChaseDirector2019
7 yrs
Michael GalanePresident2018
8 yrs
Michele WongExecutive Director2018
8 yrs
Raymond BurnellDirector2018
8 yrs
Under 5 years5 to 6 years6 years or moreShow all 18 →

Officers and senior leadership

3 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Bonnie PattersonDirector of Finance & Operationssince 2021
Michael GalaneDirector (Interim Executive Director)2019
Shahnaz VandeventerDirector of Marketing & Developmentsince 2021

Pay and hours

year to 30 June 2025iFrom Part VII of the Form 990: compensation reported for each officer, director, trustee, key employee and highest-paid staff member, and the average hours a week they report. Most board members are unpaid; a blank means nothing was reported. Pay from related organisations is shown separately.
NameTitle as filedHours a weekPay from the organisationRelated organisationsOther
Andrea Durham Thru 11725Interim Executive Director40$187k$3k
Daniela CalvittiDirector of Finance40$100k
Jita Pandya BunoPresident5$0
Steve HansenVice President5$0
Anne StainesSecretary5$0
Jeff GrubbsTreasurer5$0
Michele WongDirector5$0
Farres EverlyDirector5$0
Binda MangatDirector5$0
Dusty MillerDirector5$0
Melissa FosterDirector5$0
Michael GalaneDirector5$0
Dr Judy KjelstromDirector5$0
Celeste ChinDirector5$0
Harry LaswellDirector5$0
Sam SmallsDirector5$0
Meg BirminghamDirector5$0
Mabel SalonDirector5$0
Thomas WoodsDirector5$0
Simeon GantDirector5$0
Majorie SolomonDirector5$0

About

Legal name
Powerhouse Science Center
EIN
680321106
Address
400 Jibboom St, Sacramento, CA, 95811-0114
State
California
Mission
The powerhouse science center is a dynamic, regional hub that engages and inspires people of all ages to explore the wonders, possibilities, and responsibilities of science. (as filed on the Form 990)
Activity (NTEE)
A500 Arts, culture and humanities
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Arts, Culture & Humanities
Size band
9 (IRS master file code)
Formed
1993
Principal officer
Daniela Calvitti (as named on the Form 990)
IRS ruling date
1 January 1995
Status
Code 01 (unconditional exemption)
Form 990 filings on record
6, latest 2023
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥8years on the filingsAndrew Kramer
≥8years on the filingsAnne Staines
≥8years on the filingsBinda Mangat
≥8years on the filingsCeleste Chin

Latest return

year to 30 June 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 30 June 2025. US dollars, as filed.
Total assets
$60.1m
Total liabilities
$46.5m
Net assets or fund balances
$13.6m
Contributions and grants received
$3m
Program service revenue
$2.7m
Employees
95
Volunteers
73