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THE BREAKTHROUGH INSTITUTE

EIN 81-4526660 BERKELEY, CA

Revenue 2025
$5,069,912
Expenses 2025
$5,783,654

Program services were 83.3% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
C19
Classification
1280
Street
2054 UNIVERSITY AVE STE 500

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Officers and directors · 2025

As listed in Part VII of the 2025 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Ronald Nordhaus

    Executive Dir.

    Total calculated
    $370,737
    From this org
    $320,000
    From related orgs
    $0
    Other
    $50,737
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $280,000
    Bonus
    $40,000
    Other
    not reported
    Deferred
    $9,600
    Nontaxable benefits
    $41,137
    Filer's total
    $370,737

  • David Hong

    Washington Dir.

    Total calculated
    $237,970
    From this org
    $213,675
    From related orgs
    $0
    Other
    $24,295
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $213,675
    Bonus
    not reported
    Other
    not reported
    Deferred
    $6,410
    Nontaxable benefits
    $17,885
    Filer's total
    $237,970

  • Alex Trembath

    Deputy Dir.

    Total calculated
    $229,669
    From this org
    $211,150
    From related orgs
    $0
    Other
    $18,519
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $211,150
    Bonus
    not reported
    Other
    not reported
    Deferred
    $6,335
    Nontaxable benefits
    $12,184
    Filer's total
    $229,669

  • Adam Stein

    Dir. Nuclear Energy Innovation

    Total calculated
    $213,710
    From this org
    $169,950
    From related orgs
    $0
    Other
    $43,760
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $169,950
    Bonus
    not reported
    Other
    not reported
    Deferred
    $5,099
    Nontaxable benefits
    $38,661
    Filer's total
    $213,710

  • Seaver Wang

    Dir. of Climate & Energy

    Total calculated
    $205,675
    From this org
    $190,550
    From related orgs
    $0
    Other
    $15,125
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $190,550
    Bonus
    not reported
    Other
    not reported
    Deferred
    $5,717
    Nontaxable benefits
    $9,408
    Filer's total
    $205,675

  • Daniel Blaustein-Rejto

    Dir. Food & Agriculture

    Total calculated
    $192,702
    From this org
    $171,466
    From related orgs
    $0
    Other
    $21,236
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $171,466
    Bonus
    not reported
    Other
    not reported
    Deferred
    $5,144
    Nontaxable benefits
    $16,092
    Filer's total
    $192,702

  • Emily Bass

    Dir. Fed Policy

    Total calculated
    $169,823
    From this org
    $157,646
    From related orgs
    $0
    Other
    $12,177
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $157,646
    Bonus
    not reported
    Other
    not reported
    Deferred
    $4,729
    Nontaxable benefits
    $7,448
    Filer's total
    $169,823

  • Ephstathia Bonadies

    Dir. Events & Special Projects

    Total calculated
    $168,179
    From this org
    $154,525
    From related orgs
    $0
    Other
    $13,654
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $144,525
    Bonus
    $10,000
    Other
    not reported
    Deferred
    $4,636
    Nontaxable benefits
    $9,018
    Filer's total
    $168,179

  • Ann Wang

    Dir. of Ops

    Total calculated
    $158,467
    From this org
    $124,424
    From related orgs
    $0
    Other
    $34,043
    Hours/week
    40

    Schedule J breakdown matched by us

    Base
    $124,424
    Bonus
    not reported
    Other
    not reported
    Deferred
    $3,733
    Nontaxable benefits
    $30,310
    Filer's total
    $158,467

  • Alexander Smith

    Editorial Dir.

    Total calculated
    $146,940
    From this org
    $133,250
    From related orgs
    $0
    Other
    $13,690
    Hours/week
    40

  • William Tillson

    Sr. Nuc Ener Analy

    Total calculated
    $126,388
    From this org
    $104,481
    From related orgs
    $0
    Other
    $21,907
    Hours/week
    40

  • Peter Seel

    Radl Health Analys

    Total calculated
    $117,539
    From this org
    $103,090
    From related orgs
    $0
    Other
    $14,449
    Hours/week
    40

  • Emma Kovak

    Sr. Food/Ag Analys

    Total calculated
    $110,283
    From this org
    $105,825
    From related orgs
    $0
    Other
    $4,458
    Hours/week
    40

  • Tisha Schuller

    Board Chair

    Total calculated
    $0
    Hours/week
    2

  • Thomas Riley

    Sec./Treasury

    Total calculated
    $0
    Hours/week
    2

  • Matthew Winkler

    Board Member

    Total calculated
    $0
    Hours/week
    1

  • Rachel Pritzker

    Board Member

    Total calculated
    $0
    Hours/week
    1

  • Ross Koningstein

    Board Member

    Total calculated
    $0
    Hours/week
    1

  • Ray Rothrock

    Board Member

    Total calculated
    $0
    Hours/week
    1

  • Jennifer Hernandez

    Board Member

    Total calculated
    $0
    Hours/week
    1

  • Chris Foreman

    Board Member

    Total calculated
    $0
    Hours/week
    1

  • Bill Budinger

    Board Member

    Total calculated
    $0
    Hours/week
    1

Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead — compensation, contributions to benefit plans, and expense account — and the total sums those. A Schedule J breakdown is as filed: base pay, bonus, other, deferred compensation and nontaxable benefits from this organization, with any from related organizations beside each, and the filer's own total. It is shown with the Part VII listing of the same name on the same return. The form gives no key between the two, so that pairing is ours, and is marked matched by us. Earlier years are each on their own filing page.

Filings

  • 2025
    Revenue
    $5,069,912
    Expenses
    $5,783,654
    Contributions
    $4,610,976
    Grants paid
    $0
  • 2024
    Revenue
    $7,537,340
    Expenses
    $5,536,433
    Contributions
    $7,181,014
    Grants paid
    $20,000
  • 2023
    Revenue
    $4,438,319
    Expenses
    $6,558,097
    Contributions
    $4,063,704
    Grants paid
    $0
  • 2022
    Revenue
    $6,739,502
    Expenses
    $5,383,594
    Contributions
    $6,545,552
    Grants paid
    $0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Grants made

Where these grants went next →

Grants received

The 10 largest by cash amount. The API serves every itemized grant.

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 10 September 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.