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PeerBasis
Compensation Comparability Determination

Ninth Judicial Circuit Historical

Executive Director / CEO

EIN 942984882
CA · NTEE A82Z
FY ending 2024-12-31
June 9, 2026

This analysis benchmarks the total compensation of Johanna Hartwig, Executive Director / CEO ($119,304) against every comparable organization that fit the selection criteria — 99 in total — drawn systematically from IRS Form 990 filings, not a hand-picked subset.

Compensation sits at approximately the 90th percentile of comparable organizationswithin the typical range

Benchmarked executive: Johanna Hartwig — reported title “Executive Dir.”, a direct title match to the Executive Director / CEO role.

How comparable organizations were selected

99 organizations qualified on sector, size, and geography 99 within the band form the benchmarked peer set.

Distribution of comparable compensation

$3,832 total compensation of comparable organizations → $203,899 $119,304
$41,78410th
$61,17225th
$77,887Median
$101,18875th
$117,20690th
$119,304This org · 90th
p10$41,784
p25$61,172
p50$77,887
p75$101,188
p90$117,206
$119,304

Comparable organizations

Each figure is Form 990 Part VII columns D + F (reportable pay plus other compensation and benefits; column F may include amounts from related organizations), normalized to CA cost of living (BEA RPP, 2023) and to its filing year (CPI-U); the reported amount is on each linked 990.

OrganizationStateRevenueMatched titleComp
(reported)
Comp
(adjusted)
FY
Laporte County Historical Steam IN$416,851 General Mana $87,208 $106,503 2024
Suffolk County Historical Society NY$416,792 Executive Director $95,567 $102,962 2023
Oldham County Historical Society Inc KY$419,260 Executive Director $62,600 $77,887 2024
Goodhue County Historical MN$419,837 Executive Director $63,357 $72,500 2024
Historic Madison Inc IN$419,926 President/ E $5,524 $6,746 2024
Bartholomew County Historical Society IN$422,075 Executive Director $68,664 $83,856 2024
Skagit County Historical Society WA$410,330 Executive Director $62,353 $64,650 2024
Hamburg Natural History Society Inc NY$409,251 Executive Director $65,345 $68,381 2024
Solvang Heritage Associates Inc CA$408,728 Former Executive Director $98,345 $101,250 2023
Costume Society Of America Inc GA$406,052 Executive Director $62,219 $72,449 2024
Little Compton Historical Society Inc RI$401,753 Executive Director $87,405 $99,926 2023
Historical Society Of NY$398,815 Executive Dir. $59,039 $60,190 2025
Washington County Historical Society OR$397,757 Co-director $80,923 $87,029 2024
Gilpin County Historical Society CO$396,148 Executive Director $46,452 $51,583 2024
Delaware River Mill Society NJ$395,448 Executive Di $78,577 $83,647 2023
Hanover Tavern Foundation VA$395,039 Executive Director $114,000 $127,472 2024
Museum Of The American Railroad TX$438,959 Ceo $88,480 $105,525 2023
Gracie Mansion Conservancy NY$445,340 Executive Director $200,000 $203,899 2025
Historic Augusta Inc GA$446,258 Executive Di $88,726 $103,315 2024
Ephraim Historical Foundation Inc WI$387,051 Executive Director $61,208 $74,028 2024
Cumberland County Historical Society NJ$386,672 Treasurer $3,600 $3,832 2023
Maryland & Pennsylvania Railroad Preservation Society PA$386,454 Treasurer $5,150 $5,948 2024
Woodstock History Center Inc VT$382,213 Executive Director $72,950 $85,033 2024
Preservation Mass MA$381,477 President $68,438 $73,324 2023
Columbus Landmarks Foundation OH$380,250 Ceo $73,500 $90,154 2024

Comp (reported) is the figure on each organization's Form 990 (columns D + F); Comp (adjusted) normalizes it to CA cost of living and 2024 dollars. Click any organization to verify the figure on ProPublica.

Methodology

Comparable organizations were drawn from electronically filed IRS Form 990 returns and matched on sector (NTEE code), budget (a size-adaptive revenue band that tightens as the organization grows), and geography (same-state first, broadening only when too few peers qualify); every organization within the band forms the peer set. To compare fairly across regions and years, peer compensation is normalized to CA cost of living (BEA Regional Price Parities, 2023) and to the subject's filing year (CPI-U). The figure benchmarked is Form 990 Part VII, Section A, columns D + F — reportable pay plus other compensation, benefits, and deferred amounts (column F may include amounts from related organizations) — with the chief executive matched by role. Related-organization amounts (column E) and institutional trustees are excluded. Full methodology: peerbasis.org/methodology.

Sample, role match & sensitivity

Sensitivity — the subject's percentile under alternative compensation definitions:

BasisSubject percentile
Total compensation (D + F), cost-of-living + inflation adjusted — the PeerBasis default90th
Total compensation (D + F), as reported (no adjustments)94th
Reportable pay only (column D), adjusted92nd
All sources (D + E + F), adjusted87th

If the percentile moves materially across these definitions, the result is sensitive to methodology choices, and the board should weigh which basis best fits its facts.

Rebuttable presumption of reasonableness · 26 CFR 53.4958-6

Compensation paid by a tax-exempt organization is presumed reasonable — shifting the burden to the IRS — when three requirements are met. This report supplies the comparability data for the second. The board should record the following in its minutes concurrently with its decision:

Draft board minutes — executive compensation

  1. The compensation of the Executive Director / CEO (Johanna Hartwig) was approved in advance by [the Board / Compensation Committee], composed of members with no conflict of interest with respect to the arrangement.
  2. Prior to its determination, the authorized body obtained and relied upon appropriate comparability data, namely the PeerBasis Compensation Comparability Determination dated June 9, 2026, comparing compensation against 99 similarly situated organizations (Same NTEE sector (A82), nationwide + budget 0.67–1.5× revenue).
  3. The authorized body determined that total compensation of $119,304 is reasonable (approximately the 90th percentile of comparable organizations) and documented the basis for this determination concurrently, on [date], by a vote of [__ for / __ against].

Sources: IRS Form 990 e-file data (apps.irs.gov); IRS Business Master File (NTEE classification). Every figure traces to an original public filing — click any organization above to verify it on ProPublica. PeerBasis is a service of Prismind Analytics; its methodology is published, was commissioned for independent adversarial review, and discloses its own limitations. This report is comparability data to support a board's good-faith determination under IRC 4958; it is not legal or tax advice. Generated by PeerBasis on June 9, 2026.