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PeerBasis
Compensation Comparability Determination

Gammelgarden Museum Of Scandia

Executive Director / CEO

EIN 873906763
MN · NTEE A54
FY ending 2024-12-31
June 9, 2026

This analysis benchmarks the total compensation of Ann Rinkenberger, Executive Director / CEO ($56,806) against every comparable organization that fit the selection criteria — 106 in total — drawn systematically from IRS Form 990 filings, not a hand-picked subset.

Compensation sits at approximately the 49th percentile of comparable organizationswithin the typical range

Benchmarked executive: Ann Rinkenberger — reported title “Director”, selected as the organization's highest-paid individual — no exact title match, so confirm this is a comparable role.

How comparable organizations were selected

106 organizations qualified on sector, size, and geography 106 within the band form the benchmarked peer set.

Distribution of comparable compensation

$2,157 total compensation of comparable organizations → $180,775 $56,806
$26,64110th
$43,20925th
$57,945Median
$75,81575th
$91,91790th
$56,806This org · 49th
p10$26,641
p25$43,209
p50$57,945
p75$75,815
p90$91,917
$56,806

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 MN 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
Livingston Depot Foundation Inc MT$387,692 Executive Di $60,000 $65,455 2024
Niles Essanay Silent Film Museum Inc CA$391,377 President/historian (Started 1/7/24) $18,000 $15,730 2024
American Museum Tort Law Inc CT$391,615 Executive Director $71,635 $67,974 2024
The Museum - Greenwood South SC$382,009 Executive Di $53,820 $60,899 2022
Dekalb County History Center IL$392,710 Executive Di $62,577 $64,099 2023
King Manor Assoc Of Long Island Inc NY$393,329 Executive Director $68,720 $62,844 2024
Fort Chadbourne Foundation TX$395,333 Director $45,510 $47,432 2023
National Native American Hall Of Fame MT$395,664 Executive Director $30,000 $32,727 2024
The Castle Museum OH$374,119 Executive Di $65,157 $69,841 2024
Tillamook County Pioneer Museum OR$373,195 Executive Dir. $52,576 $50,872 2023
Natural History Institute AZ$370,062 Executive Dir. $96,726 $96,924 2023
Hamilton Wood Type & Printing Museum Inc WI$367,963 Administrative Executive D $44,200 $46,716 2024
Nichols House Museum Inc MA$367,783 Executive Di $102,202 $92,945 2024
Moffat Road Railroad Museum Association CO$406,818 Executive Director $53,200 $51,626 2024
Aliceville Museum Inc AL$366,684 Executive Director $81,834 $89,472 2024
Heritage Museum Of Orange County CA$365,000 Executive Dir. $52,500 $45,879 2024
West Virginia Mine Wars Museum WV$364,225 Executive Director $66,619 $72,999 2024
Cleveland Coordinating Committee For Cod Inc OH$416,348 President $40,000 $41,771 2025
Motts Military Museum Inc OH$356,253 Executive Director $60,542 $64,895 2024
Rowan Museum Inc NC$355,798 Exec Dir (Pr $34,431 $36,004 2024
William Fremont Harn Gardens Inc OK$419,254 Executive Director $46,505 $51,824 2024
Michigan Heroes Museum MI$353,034 Executive Di $72,260 $75,482 2024
Colorado Model Railroad Museum CO$353,007 Executive Director $42,606 $41,345 2024
National Food And Beverage Foundation LA$424,500 President/ceo $22,600 $25,185 2024
George L Carter Railroad Musuem Inc TN$348,858 Assistant Director $41,750 $44,413 2024

Comp (reported) is the figure on each organization's Form 990 (columns D + F); Comp (adjusted) normalizes it to MN 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 MN 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 default49th
Total compensation (D + F), as reported (no adjustments)50th
Reportable pay only (column D), adjusted49th
All sources (D + E + F), adjusted45th

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 (Ann Rinkenberger) 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 106 similarly situated organizations (Same NTEE sector (A54), nationwide + budget 0.67–1.5× revenue).
  3. The authorized body determined that total compensation of $56,806 is reasonable (approximately the 49th 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.