2026-05-08T19:02:10-05:00 2025-06-30 420714325 RSM US LLP 920 5TH AVENUE SUITE 2800 SEATTLE WA 98104 990 2024-07-01 941696494 THE EXPLORATORIUM THEE 4155284444 17 PIER 100 SAN FRANCISCO CA 941111455 MELANIE TWARDZICKI ACTING CHEIF FINANCIAL OFFICER 4155284444 2026-05-06 1 0 SUE ROBISON P00560072 2062814444 2026-05-06 2024 2025-03-06 01:10:19Z MARK BIERMAN 17 PIER 100 SAN FRANCISCO CA 941111455 101246098 0 X EXPLORATORIUM.EDU X 1968 CA THE EXPLORATORIUM IS A PUBLIC LEARNING LABORATORY EXPLORING THE WORLD THROUGH SCIENCE, ART, AND HUMAN PERCEPTION.OUR MISSION IS TO CREATE INQUIRY-BASED EXPERIENCES THAT TRANSFORM LEARNING WORLDWIDE.OUR VISION IS A WORLD WHERE PEOPLE THINK FOR THEMSELVES AND CAN CONFIDENTLY ASK QUESTIONS, QUESTION ANSWERS, AND UNDERSTAND THE WORLD AROUND THEM.WE VALUE LIFELONG LEARNING AND TEACHING, CURIOSITY AND INQUIRY, OUR COMMUNITY, ITERATION AND EVIDENCE, INTEGRITY AND AUTHENTICITY, SUSTAINABILITY, AND INCLUSION AND RESPECT. 33 33 724 175 60775 0 29401850 27618230 29445309 29866618 5041671 4092353 2740199 2414718 66629029 63991919 8700 29357 0 0 41384555 45465147 0 0 3519497 24587001 22304304 65980256 67798808 648773 -3806889 293014681 292041625 50041593 47313039 242973088 244728586 THE EXPLORATORIUM IS A PUBLIC LEARNING LABORATORY EXPLORING THE WORLD THROUGH SCIENCE, ART, AND HUMAN PERCEPTION. OUR MISSION IS TO CREATE INQUIRY-BASED EXPERIENCES THAT TRANSFORM LEARNING WORLDWIDE. 0 0 34141791 11645149 MUSEUM AND VISITOR EXPERIENCE:WE'RE AN R&D LABORATORY THAT EXPERIMENTS WITH CUTTING-EDGE IDEAS. WE CREATE, EXPERIMENT, TEST, AND BUILD NEARLY EVERYTHING AT THE EXPLORATORIUM OURSELVES, ALWAYS LOOKING FOR THE MOST INTERESTING AND IMPORTANT IDEAS TO PURSUE, OFTEN PUSHING THE LIMITS OF WHAT'S POSSIBLE. IN THIS SENSE, WE'RE A CLASSIC RESEARCH-AND-DEVELOPMENT ORGANIZATION, CONSTANTLY CREATING NEW ACTIVITIES, WEBSITES, EVENTS, ARTWORKS, EXHIBITS, AND MORE. 7502446 12250790 GLOBAL COLLABORATIONS:WE LEARN AND SHARE WITH PARTNERS WORLDWIDE. BY DRAWING ON THE EXPLORATORIUM'S BROAD EXPERTISE, GLOBAL COLLABORATIONS IS ABLE TO PROVIDE A COMPREHENSIVE SET OF CREATIVE SERVICES FROM MASTER PLANNING TO PROGRAM DEVELOPMENT TO EXHIBIT FABRICATION AND INSTALLATION. WE LIKE TO BE AS FAR UPSTREAM IN OUR CLIENTS' CREATIVE PROCESS AS POSSIBLE, EXPLORING THE RICH QUESTIONS THAT LEAD TO TRULY AUTHENTIC, INNOVATIVE PROBLEM SOLVING. 10263045 29357 6701072 EDUCATOR ENGAGEMENT:WE'RE AT THE FOREFRONT OF SCIENCE EDUCATION. BY MAKING SCIENCE VISIBLE, TOUCHABLE, AND ACCESSIBLE TO A WIDE VARIETY OF PEOPLE AT THE MUSEUM, ONLINE, AND IN THE CLASSROOM, OUR EXPLORE-FOR-YOURSELF WAY OF LEARNING AND TEACHING INFLUENCES SCIENCE EDUCATION WORLDWIDE. OUR PROFESSIONAL DEVELOPMENT PROGRAMS PROVIDE EDUCATORS WITH THE SKILLS, TOOLS, AND SUPPORT THEY NEED TO APPLY INQUIRY-BASED LEARNING AND TEACHING IN THEIR CLASSES. WE ALSO DESIGN PROGRAMS THAT MAKE CONNECTIONS BETWEEN THE TRADITIONALLY SEPARATE WORLDS OF FORMAL (SCHOOL) AND INFORMAL (MUSEUM) EDUCATION AND UNDERSTANDING. 51907282 1 1 0 1 0 0 0 0 0 1 1 1 0 0 1 1 1 0 0 0 1 1 0 1 1 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 348 0 1 724 1 1 1 0 0 0 0 1 1 0 0 0 0 0 0 X 33 33 0 0 0 0 0 0 0 1 1 0 0 1 1 1 1 1 1 1 1 0 CA X SHAWN POWELL CONTROLLER 4155284444 17 PIER 100 SAN FRANCISCO CA 941111455 X WILLIAM BILL F MELLIN CHAIR 2.00 X X 0 0 0 MARTHA EHMANN CONTE VICE-CHAIR 2.00 X X 0 0 0 SHARON FLANAGAN SECRETARY 2.00 X X 0 0 0 KEVIN FOSTER TREASURER 2.00 X X 0 0 0 RAVIN AGRAWAL DIRECTOR (THRU 12/31/2024) 2.00 X 0 0 0 GENO ARMSTRONG DIRECTOR (THRU 4/1/2025) 2.00 X 0 0 0 DARREN BECHTEL DIRECTOR 2.00 X 0 0 0 GARY BENGIER DIRECTOR (THRU 12/31/2024) 2.00 X 0 0 0 LAMAR BUNTS DIRECTOR 2.00 X 0 0 0 JASON CHENG DIRECTOR 2.00 X 0 0 0 GEORGE W COGAN DIRECTOR 2.00 X 0 0 0 W BREWSTER ELY DIRECTOR 2.00 X 0 0 0 CHRIS FOSTER DIRECTOR 2.00 X 0 0 0 LYNN C FRITZ DIRECTOR 2.00 X 0 0 0 JOSIE HASPEL DIRECTOR 2.00 X 0 0 0 JONATHAN HEILIGER DIRECTOR 2.00 X 0 0 0 FRANCES HELLMAN DIRECTOR 2.00 X 0 0 0 GREGORY HUNTER DIRECTOR 2.00 X 0 0 0 MIMI ITO DIRECTOR (THRU 10/29/2024) 2.00 X 0 0 0 MICHAEL R JACOBSON DIRECTOR 2.00 X 0 0 0 JAMES JONES DIRECTOR 2.00 X 0 0 0 ROBERTA KATZ DIRECTOR 2.00 X 0 0 0 MARTIN LAUBER DIRECTOR 2.00 X 0 0 0 PHIL MARINEAU DIRECTOR 2.00 X 0 0 0 ALISON MAUZE DIRECTOR 2.00 X 0 0 0 MARY HOPE MH MCQUISTON DIRECTOR 2.00 X 0 0 0 KENNETH G MOORE DIRECTOR 2.00 X 0 0 0 REMY NTSHAYKOLO DIRECTOR (THRU 12/31/2024) 2.00 X 0 0 0 SAUL PERLMUTTER DIRECTOR 2.00 X 0 0 0 CAMERON PHLEGER DIRECTOR 2.00 X 0 0 0 ALBERT BERT RICHARDS DIRECTOR 2.00 X 0 0 0 VIJAY SHRIRAM DIRECTOR 2.00 X 0 0 0 CRAIG SILVERSTEIN DIRECTOR 2.00 X 0 0 0 RACHEL SKIFFER DIRECTOR 2.00 X 0 0 0 E PAYSON SKIP SMITH DIRECTOR 2.00 X 0 0 0 REMY WILKINSON DIRECTOR (THRU 8/11/2024) 2.00 X 0 0 0 ESTHER WOJCICKI DIRECTOR 2.00 X 0 0 0 JENNIFER VAN NATTA DIRECTOR 2.00 X 0 0 0 DAN YUE DIRECTOR 2.00 X 0 0 0 MARK BIERMAN EXEC DIRECTOR 37.50 X 744010 0 26984 LAURA ZANDER CHIEF FINANCIAL OFFICER (THRU 6/30/2025) 37.50 X 328417 0 32114 ROBERT SEMPER CHIEF LEARNING OFFICER 37.50 X 355605 0 17296 BLAIR WINN CHIEF ADVANCEMENT OFFICER 37.50 X 282663 0 25282 JASON PACELY CHIEF PEOPLE OFFICER 37.50 X 240149 0 49744 JULIE NUNN CHIEF BRAND OFFICER 37.50 X 246545 0 24278 THOMAS ROCKWELL CHIEF CREATIVE OFFICER 22.50 X 178365 0 44787 ANNE RICHARDSON CHIEF EXPERIENCE OFFICER 37.50 X 296384 0 22831 ANNE HOLMES CHIEF STRATEGY OFFICER 37.50 X 237632 0 24351 JULIE YU PRINCIPAL SCIENTIST 37.50 X 195237 0 23598 3105007 0 291265 112 0 1 0 POWER ENGINEERING CONSTRUCTION CO 1501 VIKING STREET ALAMEDA CA 94501 CONSTRUCTION SERVICE 2406980 FOSTER PARTNERS LIMITED RIVERSIDE THREE 22 HESTER RD LONDON UK ARCHITECTURE SERVICE 1000000 SECURITAS SECURITY SVCS USA 1001 N RENGSTORFFAVE MOUNTAIN VIEW CA 94043 SECURITY SERVICE 767610 DALBERG CONSULTING US LLC 155 WEST 23RD ST 6TH FL NEW YORK NY 10011 STRATEGY CONSULTING SERVICE 672729 SAN FRANCISCO CHRONICLE 901 MISSION STREET SAN FRANCISCO CA 94103 ADVERTISING 556597 37 1057975 3643647 22916608 279496 27618230 GLOBAL COLLABORATIONS 900099 12250970 12250970 ADMISSIONS & MEMBERSHIPS 900099 10914576 10914576 WORKSHOPS & EDUCATION 900099 3840569 3840569 CONSULTING 900099 1568842 1568842 COMMON AREA MAINTENANCE 900099 389916 389916 901745 825622 76123 29866618 1603249 60775 1542474 3974700 1855626 2119074 2119074 2119074 36485577 33996473 2489104 2489104 2489104 127490 1057975 638362 -510872 -510872 1570234 763718 806516 806516 63991919 30597011 60775 5715903 X 18000 18000 11357 11357 3224320 1272136 1669521 282663 33049898 26137909 4869334 2042655 6473512 5395673 703206 374633 2717417 2233390 266634 217393 7356657 4782524 2428226 145907 2244136 2166764 2088 75284 353743 263227 28766 61750 3637904 2793212 827943 16749 783580 745484 26974 11122 223003 173590 38403 11010 4639892 3956339 664703 18850 PRODUCTION SUPPLIES 2543293 1986799 544845 11649 OTHER OUTSIDE SERVICES 1743809 1192591 301386 249832 STIPENDS 633913 633913 RENTAL EXP LN 6B -1855626 -1855626 67798808 51907282 12372029 3519497 4992976 4305649 1207027 493240 9072627 12543265 1496152 1363464 1098060 1068748 1834968 1555250 235001198 76196724 161382578 158804474 68019420 74793896 31586543 26187836 12324330 10925803 293014681 292041625 8711513 9019202 6774355 5320611 20408200 19667304 14147525 13305922 50041593 47313039 X 136470417 130641819 106502671 114086767 242973088 244728586 293014681 292041625 -3806889 5562387 0 X 0 1 X 1 1 1 X 32097486 48610555 24434650 29401850 27618230 162162771 32097486 48610555 24434650 29401850 27618230 162162771 48012057 114150714 1532578 3979282 5336904 5980414 5517174 22346352 11795 43920 181734 103630 127490 468569 184977692 132541917 0.61710 0.67170 X SCHEDULE A, PART II, LINE 10, EXPLANATION OF OTHER INCOME: FUNDRAISING INCOME - 2020 AMOUNT: $ 11,795. 2021 AMOUNT: $ 43,920. 2022 AMOUNT: $ 181,734. 2023 AMOUNT: $ 103,630. 2024 AMOUNT: $ 127,490. RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED 0 0 0 0 0 0 0 0 1 234000 234000 0 PART II-B, LINE 1: ATTEMPTING TO INFLUENCE LEGISLATION TO BETTER POSITION OURSELVES TO RECEIVE GRANTS/CONTRACTS FROM GOVERNMENT AGENCIES 88667384 6500000 10415892 3200000 1009069 101374207 77418653 15251653 3000000 1002922 88667384 74466260 6307364 2700000 654971 77418653 82854673 225000 -6358413 2255000 74466260 65796163 20680511 3622000 82854674 0.03000 0.67000 0.30000 0 0 194117229 41876126 152241103 26679974 22736948 3943026 14203995 11583650 2620345 158804474 26187836 F 26187836 LEASE LIABILITY 13305922 13305922 X 74889470 5562387 2077457 7639844 67249626 -3257707 -3257707 63991919 73133972 2077457 3257707 5335164 67798808 0 67798808 PART V, LINE 4: THE EXPLORATORIUM HAS ADOPTED INVESTMENT AND SPENDING POLICIES FOR ENDOWED ASSETS THAT ATTEMPT TO PROVIDE A PREDICTABLE STREAM OF FUNDING FOR PROGRAMS SUPPORTED BY ITS ENDOWMENT WHILE SEEKING TO MAINTAIN THE PURCHASING POWER OF THE ENDOWED ASSETS. THE INVESTMENT AND SPENDING POLICIES WORK TOGETHER TO ACHIEVE THIS OBJECTIVE. THE INVESTMENT POLICY ESTABLISHES AN ACHIEVABLE RETURN OBJECTIVE THROUGH DIVERSIFICATION OF ASSET CLASSES. TO ACCOMPLISH THE LONG-TERM RATE OF RETURN OBJECTIVES, THE EXPLORATORIUM RELIES ON A TOTAL RETURN STRATEGY IN WHICH INVESTMENT RETURNS ARE ACHIEVED THROUGH BOTH CAPITAL APPRECIATION (REALIZED AND UNREALIZED) AND CURRENT YIELD (INTEREST AND DIVIDENDS). THE EXPLORATORIUM TARGETS A DIVERSIFIED ASSET ALLOCATION WITH AN EMPHASIS ON EQUITY-BASED INVESTMENTS, WITHIN PRUDENT RISK PARAMETERS. THE SPENDING POLICY DETERMINES THE AMOUNT OF MONEY TO BE DISTRIBUTED ANNUALLY FROM THE EXPLORATORIUM'S VARIOUS ENDOWED FUNDS FOR OPERATIONAL SUPPORT. THE EXPLORATORIUM ADOPTED A SPENDING POLICY CALLED THE TOBIN RULE. THE TOBIN RULE AIMS TO PROVIDE A STEADY ENDOWMENT EARNINGS WITHDRAWAL REGARDLESS OF LARGE CHANGES TO THE MARKET VALUE OF THE ENDOWMENT. THE TOBIN RULE IS DEFINED BY THE EXPLORATORIUM AS 80% OF THE PRIOR YEAR'S DRAW TIMES INFLATION, PLUS 20% OF THE PREVIOUS YEAR'S 12/31 MARKET VALUE, TIMES A 4.5% SPENDING RATE. PART X, LINE 2: THE EXPLORATORIUM HAS RECEIVED RULINGS FROM THE INTERNAL REVENUE SERVICE AND THE CALIFORNIA FRANCHISE TAX BOARD GRANTING IT EXEMPTION FROM INCOME TAXES. THE EXPLORATORIUM FOLLOWS THE PROVISIONS OF ASC 740-10, INCOME TAXES, RELATING TO ACCOUNTING FOR UNCERTAIN TAX POSITIONS. MANAGEMENT EVALUATED THE EXPLORATORIUM'S TAX POSITIONS AND CONCLUDED THAT THERE WERE NO MATERIAL UNCERTAINTIES IN INCOME TAXES AS OF JUNE 30, 2025 AND 2024. PART XI, LINE 4B - OTHER ADJUSTMENTS: RENTAL EXPENSE REPORTED ON LINE 6B -1,855,626. FUNDRAISING EXPENSE ON LINE 8B -638,362. COGS REPORTED ON LINE 10B -763,719. PART XII, LINE 2D - OTHER ADJUSTMENTS: RENTAL EXPENSE REPORTED ON LINE 6B 1,855,626. FUNDRAISING EXPENSE ON LINE 8B 638,362. COGS REPORTED ON LINE 10B 763,719. 1 EAST ASIA AND THE PACIFIC (SOUTH KOREA) 0 0 PROGRAM SERVICES EXHIBIT SALES AND RENTALS 11500123 EAST ASIA AND THE PACIFIC (SINGAPORE) 0 0 PROGRAM SERVICES EXHIBIT SALES AND RENTALS 450755 MIDDLE EAST AND NORTH AFRICA (KUWAIT) 0 0 PROGRAM SERVICES EXHIBIT SALES AND RENTALS 98227 CENTRAL AMERICA AND THE CARIBEAN 0 0 INVESTMENTS INVESTMENTS 5065394 0 0 0 0 0 0 17114499 0 17114499 SUB-SAHARAN AFRICA FELLOWSHIP 11357 WIRE 0 0 1 1 0 1 1 0 0 PART I, LINE 3: THE ORGANIZATION USES GAAP TO REPORT EXPENDITURES IN A FOREIGN REGION. X X X X X X X 0 CA GALA 1100298 986038 114260 288840 30645 250037 WONDER FUNDAY 85167 71937 13230 54105 1215 13520 1185465 1057975 127490 342945 31860 263557 638362 -510872 0 FELLOWSHIP (NORTH AMERICA) 2 18000 X X X X X 0 0 0 0 0 0 0 0 0 MARK BIERMAN EXEC DIRECTOR 624698 0 118474 0 838 0 17250 0 9734 0 770994 0 0 0 ROBERT SEMPER CHIEF LEARNING OFFICER 355151 0 0 0 454 0 16246 0 1050 0 372901 0 0 0 LAURA ZANDER CHIEF FINANCIAL OFFICER (THRU 6/30/2 327993 0 0 0 424 0 15184 0 16930 0 360531 0 0 0 ANNE RICHARDSON CHIEF EXPERIENCE OFFICER 295988 0 0 0 396 0 14149 0 8682 0 319215 0 0 0 BLAIR WINN CHIEF ADVANCEMENT OFFICER 282287 0 0 0 376 0 13436 0 11846 0 307945 0 0 0 JASON PACELY CHIEF PEOPLE OFFICER 239813 0 0 0 336 0 11994 0 37750 0 289893 0 0 0 JULIE NUNN CHIEF BRAND OFFICER 246207 0 0 0 338 0 12056 0 12222 0 270823 0 0 0 ANNE HOLMES CHIEF STRATEGY OFFICER 237319 0 0 0 313 0 11169 0 13182 0 261983 0 0 0 THOMAS ROCKWELL CHIEF CREATIVE OFFICER 178160 0 0 0 205 0 7973 0 36814 0 223152 0 0 0 JULIE YU PRINCIPAL SCIENTIST 194974 0 0 0 263 0 9400 0 14198 0 218835 0 0 0 A CALIFORNIA INFRASTRUCTURE AND ECONOMIC DEV BANK 630304653 2018-08-31 49200000 SEE PART VI 0 0 0 A 49200000 590291 2013 0 0 1 1 A 0 1 0 0 0 0 1 A 0 0 1 0 1 0 0 0 1 A 1 X 10 273174 FAIR MARKET VALUE X 10 6322 PURCHASE PRICE 0 0 1 0 PART I, COLUMN (B): REPORTING THE NUMBER OF CONTRIBUTIONS RECEIVED FORM 990, PART VI, SECTION B, LINE 11B RSM LLP AND THE EXPLORATORIUM STAFF WORK TOGETHER TO GATHER THE REQUIRED TAX INFORMATION NECESSARY TO COMPLETE THE FORM 990. THE INITIAL DRAFT RETURNS WERE REVIEWED BY RSM AND THE EXPLORATORIUM STAFF, ITEMS WERE DISCUSSED AND REVIEWED. RECOMMENDED CHANGES WERE REFLECTED IN THE RETURN AND A DRAFT TAX RETURN WAS PREPARED. THE AUDIT COMMITTEE RECEIVED THE FINAL VERSION OF THE TAX RETURNS FOR REVIEW AND APPROVAL PRIOR TO FILING WITH THE APPROPRIATE TAX AUTHORITIES. THE BOARD HAS DELEGATED MONITORING AND REVIEW OF FINANCIAL MATTERS TO THE AUDIT COMMITTEE. FULL FORM 990 COPIES OF THE RETURNS ARE PROVIDED TO THE FULL BOARD OF DIRECTORS. FORM 990, PART VI, SECTION B, LINE 12C THE EXPLORATORIUM REQUIRES THAT THE EXECUTIVE DIRECTOR, CFO, AND DIRECTORS OR TRUSTEES DISCLOSE IN WRITING WHETHER OR NOT THERE ARE ANY POTENTIAL CONFLICTS OF INTEREST AT LEAST ANNUALLY AND DURING THE YEAR AS NECESSARY. IF ANY CONFLICT IS IDENTIFIED, THE CONCERNS ARE IMMEDIATELY ELEVATED TO THE CHAIRMAN OF THE BOARD. AT THAT TIME THE BOARD MEMBER MAY BE ASKED TO LEAVE MEETINGS OR ABSTAIN FROM VOTING ON CERTAIN ISSUES. FORM 990, PART VI, SECTION B, LINE 15 THE COMPENSATION COMMITTEE ANNUALLY REVIEWS THE EXECUTIVE DIRECTOR AND CHIEF FINANCIAL OFFICER COMPENSATION USING SURVEYS AND OTHER COMPARABLE DATA. THESE DECISIONS ARE PROPERLY DOCUMENTED. THIS PROCESS WAS LAST UNDERTAKEN IN JULY, 2024. FORM 990, PART VI, SECTION C, LINE 19 THE COMPANY MAINTAINS FOR PUBLIC RECORD COPIES OF ITS GOVERNING DOCUMENTS, CONFLICTS OF INTEREST AND FINANCIAL STATEMENTS WHICH ARE ALL AVAILABLE UPON REQUEST. FINANCIAL STATEMENTS, CONFLICT OF INTEREST POLICY AND GOVERNING DOCUMENTS ARE AVAILABLE UPON REQUEST FOR THE SAME PERIOD OF DISCLOSURE AS SET FORTH IN SECTION 6104(D). PART VII, SECTION A, COLUMN B: AVERAGE HOURS PER WEEK ARE PAYROLL HOURS. ACTUAL HOURS ARE MUCH GREATER. FORM 990, PART IX, LINE 11G OTHER PROFESSIONAL FEES: PROGRAM SERVICE EXPENSES 4,782,524. MANAGEMENT AND GENERAL EXPENSES 2,428,226. FUNDRAISING EXPENSES 145,907. TOTAL EXPENSES 7,356,657.