Civic Intelligence

Chalk Bluffs Foundation for Historical

EIN 52-2358518 • Grover, CO

28085 Wcr 134Grover, CO 80729
Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

43rd percentile

0.00x

Tied with the lowest-debt nonprofits in its peer group.

$500k-$1M nonprofits • Source year 2025

Liabilities / Revenue

44th percentile

0.00x

Tied with the lowest-debt nonprofits in its peer group.

$500k-$1M nonprofits • Source year 2025

Net Margin

97th percentile

90%

Higher net margin than 97% of similar nonprofits.

$500k-$1M nonprofits • Source year 2025

Top Officer Pay

58th percentile

$0

Higher top officer pay than 58% of similar nonprofits.

Top officer pay equals 0.0% of source-year revenue.

$500k-$1M nonprofits • Source year 2025

Asset Growth

56th percentile

4.2%

Faster asset growth than 56% of similar nonprofits.

$500k-$1M nonprofits • Annualized from 2024 to 2025

Revenue Growth

78th percentile

45%

Faster revenue growth than 78% of similar nonprofits.

$500k-$1M nonprofits • Annualized from 2024 to 2025

Balance Sheet
Liabilities / Assets43rd percentile

Assets

Up

$914,283

Up $36,456 (+4.2%) from 2024

Liabilities

Flat

$0

Flat from 2024

Net Assets

Up

$914,283

Up $36,456 (+4.2%) from 2024

Operations
Liabilities / Revenue44th percentileNet Margin97th percentile

Revenue

Up

$40,488

Up $12,488 (+45%) from 2024

Expenses

Up

$4,032

Up $425 (+12%) from 2024

Net Income

Up

$36,456

Up $12,063 (+49%) from 2024

Trend Graphs

Balance Sheet Trend

Asset Growth56th percentile

Grouped bars show assets, liabilities, and net assets across loaded filings.

$1.0M$500K$0Assets 2011: $540,732Liabilities 2011: $02011Assets 2012: $539,201Liabilities 2012: $02012Assets 2013: $537,447Liabilities 2013: $02013Assets 2014: $535,524Liabilities 2014: $02014Assets 2015: $535,562Liabilities 2015: $02015Assets 2019: $551,234Liabilities 2019: $02019Assets 2020: $864,105Liabilities 2020: $02020Assets 2021: $846,540Liabilities 2021: $0Net Assets 2021: $846,5402021Assets 2022: $844,449Liabilities 2022: $0Net Assets 2022: $844,4492022Assets 2023: $853,434Liabilities 2023: $0Net Assets 2023: $853,4342023Assets 2024: $877,827Liabilities 2024: $0Net Assets 2024: $877,8272024Assets 2025: $914,283Liabilities 2025: $0Net Assets 2025: $914,2832025

Highlighted filing

2025

Assets$914,283
Liabilities$0
Net Assets$914,283
Open 2025 Filing

Operations Trend

Revenue Growth78th percentile

Revenue, expenses, and net income by year, with the latest filing highlighted.

$400K$300K$200K$100K$0-$100KRevenue 2011: $1,002Expenses 2011: $2,078Net Income 2011: -$1,0762011Revenue 2012: $290Expenses 2012: $1,821Net Income 2012: -$1,5312012Revenue 2013: $1Expenses 2013: $1,755Net Income 2013: -$1,7542013Revenue 2014: $1Expenses 2014: $1,924Net Income 2014: -$1,9232014Revenue 2015: $2,001Expenses 2015: $1,963Net Income 2015: $382015Revenue 2019: $22,321Expenses 2019: $3,010Net Income 2019: $19,3112019Revenue 2020: $324,962Expenses 2020: $12,091Net Income 2020: $312,8712020Revenue 2021: $27Expenses 2021: $17,592Net Income 2021: -$17,5652021Revenue 2022: $0Expenses 2022: $2,091Net Income 2022: -$2,0912022Revenue 2023: $11,901Expenses 2023: $2,916Net Income 2023: $8,9852023Revenue 2024: $28,000Expenses 2024: $3,607Net Income 2024: $24,3932024Revenue 2025: $40,488Expenses 2025: $4,032Net Income 2025: $36,4562025

Highlighted filing

2025

Revenue$40,488
Expenses$4,032
Net Income$36,456
Open 2025 Filing

Filings

Most recent year

2025 • Form 990PFDetailed filing. Detailed filing data is available for this year.

Open filing
Assets
$914,283
Liabilities
$0
Net assets
$914,283
Revenue
$40,488
Expenses
$4,032
Net income
$36,456
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2025Detailed filing. Detailed filing data is available for this year.$9.14$0.00$9.14$0.40$0.04$0.36
2024Detailed filing. Detailed filing data is available for this year.$8.78$0.00$8.78$0.28$0.04$0.24
2023Detailed filing. Detailed filing data is available for this year.$8.53$0.00$8.53$0.12$0.03$0.09
2022Detailed filing. Detailed filing data is available for this year.$8.44$0.00$8.44$0.00$0.02$0.02
2021Detailed filing. Detailed filing data is available for this year.$8.47$0.00$8.47$0.00$0.18$0.18
2020Summary only. Only limited summary data is available for this year.$8.64$0.00$3.25$0.12$3.13
2019Summary only. Only limited summary data is available for this year.$5.51$0.00$0.22$0.03$0.19
2015Summary only. Only limited summary data is available for this year.$5.36$0.00$0.02$0.02$0.00
2014Summary only. Only limited summary data is available for this year.$5.36$0.00$0.00$0.02$0.02
2013Summary only. Only limited summary data is available for this year.$5.37$0.00$0.00$0.02$0.02
2012Summary only. Only limited summary data is available for this year.$5.39$0.00$0.00$0.02$0.02
2011Summary only. Only limited summary data is available for this year.$5.41$0.00$0.01$0.02$0.01
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Nov 1, 2024 to Oct 31, 2025
Signed
Dec 5, 2025
Return Version
2024v5.2
Compensation and Service Providers
Top Officer Pay58th percentile

Employees

NameTitleFull / Part TimeBaseOtherTotal
MARK T COX IVPresident, Trustee-$0--
GORDON MCKELLAR BLACKTreasurer, Trustee-$0--
EMILY WARREN COXSecretary, Trustee-$0--
BEVERLY COX BLACKTrustee-$0--
DAVID G RIESVice President, Trustee-$0--
JESS E KETCHAMAssistant Treasurer, Trustee-$0--
ADRYN M SUMNERTrustee, Director Of New Projects-$0--
Filing and Contact Details

Filer

Filer Name
Chalk Bluffs Foundation for Historical
EIN
52-2358518
Phone
8042857301
Address
28085 WCR 134, GROVER, CO 80729

Signing Officer

Name
Mark T Cox
Title
President
Phone
8042857301
Signed
2025-12-05
Discuss with paid preparer
Yes

Preparer

Firm
Marcia L Siebring CPA
Address
1035 37TH AVENUE COURT, GREELEY, CO 80634-2576
Preparer
Marcia L Siebring
Phone
9703921486
Raw XML Appendix331 raw XML fields

This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.

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IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/PersonNm0MARK T COX IV
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/PersonNm1GORDON MCKELLAR BLACK
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/PersonNm2EMILY WARREN COX
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IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/PersonNm5JESS E KETCHAM
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/PersonNm6ADRYN M SUMNER
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/TitleTxt0PRESIDENT, TRUSTEE
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/TitleTxt1TREASURER, TRUSTEE
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/TitleTxt2SECRETARY, TRUSTEE
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/TitleTxt3TRUSTEE
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/TitleTxt4VICE PRESIDENT, TRUSTEE
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/TitleTxt5ASSISTANT TREASURER, TRUSTEE
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/TitleTxt6TRUSTEE, DIRECTOR OF NEW PROJECTS
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IRS990PF/PrivateOperatingFoundationsGrp/QualifyingDistributionsGrp/TotalAmt00
IRS990PF/PrivateOperatingFoundationsGrp/QualifyingDistributionsGrp/Year1Amt00
IRS990PF/PrivateOperatingFoundationsGrp/QualifyingDistributionsGrp/Year2Amt00
IRS990PF/PrivateOperatingFoundationsGrp/QualifyingDistributionsGrp/Year3Amt00
IRS990PF/PrivateOperatingFoundationsGrp/QualifyingDistriMadeDrtGrp/CurrentYearAmt00
IRS990PF/PrivateOperatingFoundationsGrp/QualifyingDistriMadeDrtGrp/TotalAmt00
IRS990PF/PrivateOperatingFoundationsGrp/QualifyingDistriMadeDrtGrp/Year1Amt00
IRS990PF/PrivateOperatingFoundationsGrp/QualifyingDistriMadeDrtGrp/Year2Amt00
IRS990PF/PrivateOperatingFoundationsGrp/QualifyingDistriMadeDrtGrp/Year3Amt00
IRS990PF/PrivateOperatingFoundationsGrp/QualifyingDistriNotUsedDrtGrp/CurrentYearAmt00
IRS990PF/PrivateOperatingFoundationsGrp/QualifyingDistriNotUsedDrtGrp/TotalAmt00
IRS990PF/PrivateOperatingFoundationsGrp/QualifyingDistriNotUsedDrtGrp/Year1Amt00
IRS990PF/PrivateOperatingFoundationsGrp/QualifyingDistriNotUsedDrtGrp/Year2Amt00
IRS990PF/PrivateOperatingFoundationsGrp/QualifyingDistriNotUsedDrtGrp/Year3Amt00
IRS990PF/PrivateOperatingFoundationsGrp/Section4942j3Ind0X
IRS990PF/PrivateOperatingFoundationsGrp/TotalAssetsGrp/CurrentYearAmt0914283
IRS990PF/PrivateOperatingFoundationsGrp/TotalAssetsGrp/TotalAmt03489993
IRS990PF/PrivateOperatingFoundationsGrp/TotalAssetsGrp/Year1Amt0877827
IRS990PF/PrivateOperatingFoundationsGrp/TotalAssetsGrp/Year2Amt0853434
IRS990PF/PrivateOperatingFoundationsGrp/TotalAssetsGrp/Year3Amt0844449
IRS990PF/PrivateOperatingFoundationsGrp/TotalAssetsSect4942j3BiGrp/CurrentYearAmt0914283
IRS990PF/PrivateOperatingFoundationsGrp/TotalAssetsSect4942j3BiGrp/TotalAmt03489993
IRS990PF/PrivateOperatingFoundationsGrp/TotalAssetsSect4942j3BiGrp/Year1Amt0877827
IRS990PF/PrivateOperatingFoundationsGrp/TotalAssetsSect4942j3BiGrp/Year2Amt0853434
IRS990PF/PrivateOperatingFoundationsGrp/TotalAssetsSect4942j3BiGrp/Year3Amt0844449
IRS990PF/PrivateOperatingFoundationsGrp/TotalSupportGrp/TotalAmt00
IRS990PF/PrivateOperatingFoundationsGrp/TwoThirdsMinimumInvstRetGrp/TotalAmt00
IRS990PF/StatementsRegardingActy4720Grp/BrrwOrLendDisqualifiedPrsnInd00
IRS990PF/StatementsRegardingActy4720Grp/BusinessHoldingsInd00
IRS990PF/StatementsRegardingActy4720Grp/FurnGoodsDisqualifiedPrsnInd00
IRS990PF/StatementsRegardingActy4720Grp/GrantsToIndividualsInd00
IRS990PF/StatementsRegardingActy4720Grp/GrantsToOrganizationsInd00
IRS990PF/StatementsRegardingActy4720Grp/InfluenceElectionInd00
IRS990PF/StatementsRegardingActy4720Grp/InfluenceLegislationInd00
IRS990PF/StatementsRegardingActy4720Grp/JeopardyInvestmentsInd00
IRS990PF/StatementsRegardingActy4720Grp/NoncharitablePurposeInd00
IRS990PF/StatementsRegardingActy4720Grp/PayCompDisqualifiedPrsnInd00
IRS990PF/StatementsRegardingActy4720Grp/PaymentToGovernmentOfficialInd00
IRS990PF/StatementsRegardingActy4720Grp/PayPremiumsPrsnlBnftCntrctInd00
IRS990PF/StatementsRegardingActy4720Grp/ProhibitedTaxShelterTransInd00
IRS990PF/StatementsRegardingActy4720Grp/RcvFndsToPayPrsnlBnftCntrctInd00
IRS990PF/StatementsRegardingActy4720Grp/SaleOrExchDisqualifiedPrsnInd00
IRS990PF/StatementsRegardingActy4720Grp/SubjToTaxRmnrtnExPrchtPymtInd00
IRS990PF/StatementsRegardingActy4720Grp/TransferAstDisqualifiedPrsnInd00
IRS990PF/StatementsRegardingActy4720Grp/UncorrectedPriorActsInd00
IRS990PF/StatementsRegardingActy4720Grp/UncorrectedPYJeopardyInvstInd00
IRS990PF/StatementsRegardingActy4720Grp/UndistributedIncomePYInd00
IRS990PF/StatementsRegardingActyGrp/ActivitiesNotPreviouslyRptInd00
IRS990PF/StatementsRegardingActyGrp/AtLeast5000InAssetsInd01
IRS990PF/StatementsRegardingActyGrp/ChangesToArticlesOrBylawsInd00
IRS990PF/StatementsRegardingActyGrp/ComplyWithPublicInspRqrInd01
IRS990PF/StatementsRegardingActyGrp/DonorAdvisedFundInd00
IRS990PF/StatementsRegardingActyGrp/ForeignAccountsQuestionInd00
IRS990PF/StatementsRegardingActyGrp/Form1120POLFiledInd00
IRS990PF/StatementsRegardingActyGrp/Form990PFFiledWithAttyGenInd01
IRS990PF/StatementsRegardingActyGrp/LegislativePoliticalActyInd00
IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/AddressLine1Txt028085 WCR 134
IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/CityNm0GROVER
IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/StateAbbreviationCd0CO
IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/ZIPCd080729
IRS990PF/StatementsRegardingActyGrp/MoreThan100SpentInd00
IRS990PF/StatementsRegardingActyGrp/NewSubstantialContributorsInd00
IRS990PF/StatementsRegardingActyGrp/OrganizationDissolvedEtcInd00
IRS990PF/StatementsRegardingActyGrp/OrgReportOrRegisterStateCd0CO
IRS990PF/StatementsRegardingActyGrp/OwnControlledEntityInd00
IRS990PF/StatementsRegardingActyGrp/PersonsWithBooksName/BusinessNameLine1Txt0THE ORGANIZATION
IRS990PF/StatementsRegardingActyGrp/PhoneNum09708953214
IRS990PF/StatementsRegardingActyGrp/PrivateOperatingFoundationInd01
IRS990PF/StatementsRegardingActyGrp/Section4955ManagersTaxAmt00
IRS990PF/StatementsRegardingActyGrp/Section4955OrganizationTaxAmt00
IRS990PF/StatementsRegardingActyGrp/Section508eRqrSatisfiedInd01
IRS990PF/StatementsRegardingActyGrp/TaxReimbursedAmt00
IRS990PF/StatementsRegardingActyGrp/UnrelatedBusIncmOverLimitInd00
IRS990PF/StatementsRegardingActyGrp/WebsiteAddressTxt0N/A
IRS990PF/SummaryOfDirectChrtblActyGrp/Description1Txt0THE FOUNDATION CONTINUES TO BE VERY SUCCESSFUL IN ALLOWING NATURAL PRAIRIE GRASSES AND OTHER NATIVE VEGETATION TO REGENERATE.
IRS990PF/SummaryOfDirectChrtblActyGrp/Expenses1Amt00
IRS990PF/SumOfProgramRelatedInvstGrp/TotalAmt00
IRS990PF/SupplementaryInformationGrp/ContributingManagerNm0MARK T COX IV
IRS990PF/SupplementaryInformationGrp/OnlyContriToPreselectedInd0X
IRS990PF/SupplementaryInformationGrp/TotalGrantOrContriApprvFutAmt00
IRS990PF/SupplementaryInformationGrp/TotalGrantOrContriPdDurYrAmt00
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/LoansOrLoanGuaranteesInd00
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/PerformanceOfServicesEtcInd00
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/PurchaseOfAssetsNonchrtblEOInd00
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/ReimbursementArrangementsInd00
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/RelationshipsNonchrtblEOInd00
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/RentalOfFacilitiesOthAssetsInd00
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/SalesOrExchangesOfAssetsInd00
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/SharingOfFacilitiesEtcInd00
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/TrnsfrOfCashToNonchrtblEOInd00
IRS990PF/TrnsfrTransRlnNonchrtblEOGrp/TrnsfrOtherAssetNonchrtblEOInd00
IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1Txt0MARK T COX IV
IRS990ScheduleB/ContributorInformationGrp/ContributorNum01
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1Txt028085 WCR 134
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/CityNm0GROVER
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/StateAbbreviationCd0CO
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCd080729
IRS990ScheduleB/ContributorInformationGrp/PersonContributionInd0X
IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt027000
IRS990ScheduleB/GeneralRuleInd0X
IRS990ScheduleB/Organization501c3ExemptPFInd0X
OtherExpensesSchedule/OtherExpensesScheduleGrp/Desc0INSURANCE
OtherExpensesSchedule/OtherExpensesScheduleGrp/Desc1SUPPLIES
OtherExpensesSchedule/OtherExpensesScheduleGrp/Desc2OFFICE SUPPLIES
OtherExpensesSchedule/OtherExpensesScheduleGrp/DisbursementsCharitablePrpsAmt00
OtherExpensesSchedule/OtherExpensesScheduleGrp/DisbursementsCharitablePrpsAmt10
OtherExpensesSchedule/OtherExpensesScheduleGrp/DisbursementsCharitablePrpsAmt20
OtherExpensesSchedule/OtherExpensesScheduleGrp/NetInvestmentIncomeAmt00
OtherExpensesSchedule/OtherExpensesScheduleGrp/NetInvestmentIncomeAmt10
OtherExpensesSchedule/OtherExpensesScheduleGrp/NetInvestmentIncomeAmt20
OtherExpensesSchedule/OtherExpensesScheduleGrp/RevenueAndExpensesPerBooksAmt01739
OtherExpensesSchedule/OtherExpensesScheduleGrp/RevenueAndExpensesPerBooksAmt11295
OtherExpensesSchedule/OtherExpensesScheduleGrp/RevenueAndExpensesPerBooksAmt278
TaxesSchedule/TaxesDetail/Amt0395
TaxesSchedule/TaxesDetail/CategoryTxt0PROPERTY TAXES
TaxesSchedule/TaxesDetail/DisbursementsCharitablePrpsAmt00
TaxesSchedule/TaxesDetail/NetInvestmentIncomeAmt00
ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd01
ReturnHeader/BusinessOfficerGrp/PersonNm0MARK T COX
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0PRESIDENT
ReturnHeader/BusinessOfficerGrp/PhoneNum08042857301
ReturnHeader/BusinessOfficerGrp/SignatureDt02025-12-05
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt0CHALK BLUFFS FOUNDATION FOR HISTORICAL
ReturnHeader/Filer/BusinessName/BusinessNameLine2Txt0PRESERVATION & CONSERVATION
ReturnHeader/Filer/BusinessNameControlTxt0CHAL
ReturnHeader/Filer/EIN0522358518
ReturnHeader/Filer/PhoneNum08042857301
ReturnHeader/Filer/USAddress/AddressLine1Txt028085 WCR 134
ReturnHeader/Filer/USAddress/CityNm0GROVER
ReturnHeader/Filer/USAddress/StateAbbreviationCd0CO
ReturnHeader/Filer/USAddress/ZIPCd080729
ReturnHeader/IRSResponsiblePrtyInfoCurrInd01
ReturnHeader/PreparerFirmGrp/PreparerFirmEIN0731651083
ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt0MARCIA L SIEBRING CPA
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt01035 37TH AVENUE COURT
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm0GREELEY
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd0CO
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd0806342576
ReturnHeader/PreparerPersonGrp/PhoneNum09703921486
ReturnHeader/PreparerPersonGrp/PreparerPersonNm0MARCIA L SIEBRING
ReturnHeader/PreparerPersonGrp/SelfEmployedInd0X
ReturnHeader/ReturnTs02025-12-05T11:28:31-06:00
ReturnHeader/ReturnTypeCd0990PF
ReturnHeader/TaxPeriodBeginDt02024-11-01
ReturnHeader/TaxPeriodEndDt02025-10-31
ReturnHeader/TaxYr02024

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