2026-05-04T11:02:00-00:00 2025-06-30 273488128 Bennett & Associates CPAs PLLC 100 Huronview Blvd Ann Arbor MI 48103 990 2024-07-01 260711287 Great Lakes Observing System Regional Association GREA 7347412294 4840 S State Road Ann Arbor MI 48108 Jennifer Boehme CEO 7347412294 2026-05-04 true true James H Bennett CPA P00447547 7346228015 2026-05-04 2024 2025-03-06 01:10:19Z Jennifer Boehme 4840 S State Road Ann Arbor MI 48108 4877735 false X www.glos.us X 2006 MI As a nonprofit IOOS Regional Association, GLOS provides end-to-end data services that support science, policy, management, and industry all around the Great Lakes region. 8 8 8 8 0 4186597 4761011 0 0 16499 116724 4203096 4877735 1909441 2017608 0 1258965 1415684 0 0 897117 1341814 4065523 4775106 137573 102629 694352 875307 603539 681865 90813 193442 As a nonprofit IOOS Regional Association, GLOS provides end-to-end data services that support science, policy, management, and industry all around the Great Lakes region. false false 4489717 2017608 116724 GLOS coordinates a network of data users and data providers to improve the collection, management, and delivery of data across the Great Lakes region. GLOS sponsors data collection and data management projects conducted by academic institutions, non-profits, government agencies, tribes, and the private sector in the Great Lakes region including seasonal deployment of a near-shore observing asset network of approximately 50 buoys, 6 gliders, 2 high frequency radar stations and 2 autonomous underwater vehicles AUVs over 575 data streams are made available through seagull.glos.org/landing. 4489717 true true false false false false false false false false false false false false false false true false false true true true false false false false false true false true false false false true false false false false false false false false false false false false false true 0 0 true 8 true false false false false false false false false false false false false X 8 8 false false false false false false false true true false false true true true true false true true false false MI X Jennifer Boehme 7347412262 4840 S State Road Ann Arbor MI 48108 Tim Kearns Chief Information Officer 040.00 X 180997 0 37003 Jennifer Boehme Chief Executive Officer 040.00 X 162805 0 37769 Josephine Grimaudo-Cacciatore Financial Manager 040.00 X 117347 0 30774 Pete Giencke Vice Chair 001.00 X X 0 0 0 Thomas Rayburn Chair 001.00 X X 0 0 0 Aaron Fisk Director 001.00 X 0 0 0 Leon Carl Director 001.00 X 0 0 0 Stephanie Gandulla Director 001.00 X 0 0 0 Annie Atkinson Treasurer 001.00 X X 0 0 0 Mary-Claire Buell Director 001.00 X 0 0 0 Heather Stirratt Director 001.00 X 0 0 0 461149 105546 3 false true false DIG - Digital Industry Group 99 Monroe Ave NW Ste 200 Grand Rapids MI 49503 IT Services 298253 1 4744778 16233 4761011 116724 116724 116724 4877735 116724 1964318 1964318 0 53290 53290 0 590120 533955 56165 0 589389 470859 118530 61283 55835 5448 108693 99058 9635 66199 56741 9458 0 8987 8987 21603 21603 0 0 51879 39689 12190 0 121867 117323 4544 906627 886843 19784 0 0 47592 45212 2380 0 16489 14840 1649 0 0 0 14612 14612 Equipment purchases for grants 151501 151501 657 253 404 4775106 4489717 285389 0 236930 359307 2407 457422 439223 74370 694352 875307 603539 681865 603539 681865 X 90813 193442 90813 193442 694352 875307 102629 X false true X true true true X 4187676 4779188 3464245 4186597 4761011 21378717 32712 32712 32712 98136 4187676 4779188 3496957 4219309 4793723 21476853 21476853 12 4 16 42221 44521 16499 116724 219965 21696834 0.98990 0.99460 X Part II Section B Line 10 Other related revenue RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED RESTRICTED false Financial derivatives and other financial products Closely-held equity interests Federal income taxes 4910447 32712 32712 4877735 4877735 4807818 32712 32712 4775106 4775106 true North America 1 Grants to recipients located in the region 53290 1 1 53290 53290 North America Crowd Sourced Bathymetry in support of Lakebed 2030 12500 International Wire Transfer North America IGLNi Annual Meeting / Nested Seagull Workshop 25790 International Wire Transfer North America Autonomous Underwater Vehicle AUV Technician 15000 International Wire Transfer 2 1 false false false false false false Part I Line 2 GLOS reviews requested period progress reports from the grantees. GLOS also monitors the grants by reviewing the expenses charged to the invoices against budgeted expenses. true Colorado School of Mines 1500 Illinois St Golden CO 80401 846000551 170a1 294308 National Water Initiative Coastal Model Evaluation Florida Atlantic University PO Box 198660 Atlanta GA 303848660 650385507 170a1 40000 An Autonomous Digital Holographic Imaging System for Detecting Cyanobacterial Composition abundance in Lake Erie IOOS Association 205 Oakledge Road Harpswell ME 04079 274702525 501c3 468867 Supports regional associations of the US IOOS program Michigan Tech 1400 Townsend Drive Houghton MI 499311295 386005955 170a1 44111 GLYON Great Lakes Year-Round Observation Network Michigan Tech 1400 Townsend Drive Houghton MI 499311295 386005955 170a1 30661 Sensor-Centric Coastal Process Evaluation SCoPE Michigan Tech 1400 Townsend Drive Houghton MI 499311295 386005955 170a1 119672 Building Capacity to Measure and Asses Offshore, Full-frequency Water Level Fluctuations to Support Coastal Hazard Observation and Prediction Michigan Tech 1400 Townsend Drive Houghton MI 499311295 386005955 170a1 16577 Operation and Maintenance High Frequency Radar in the Straits of Mackinac, Michigan - Year VI Michigan Tech 1400 Townsend Drive Houghton MI 499311295 386005955 170a1 95499 MTU Observing Systems Operations Maintenance 2024-2025 Michigan Tech 1400 Townsend Drive Houghton MI 499311295 386005955 170a1 891 Offshore Winter Observing System Michigan Tech 1400 Townsend Drive Houghton MI 499311295 386005955 170a1 32474 Operation and Maintenance High Frequency Radar in the Straits of Mackinac, Michigan Michigan Tech 1400 Townsend Drive Houghton MI 499311295 386005955 170a1 373670 BITWISE Benthic Investigation Technology for Waters in the Great Lakes with Improved Survey Efficiency Regents of University of Michigan 500 Wolverine Tower 3003 S State Ann Arbor MI 48109 385600063 501c3 126415 Monitoring in Lake Erie and climate data products Regents of University of Minnesota PO Box 1450 Minneapolis MN 55485 416007513 170a1 16079 Monitoring stations around the St. Louis Estuary and into Lake Superior Research Foundation for State University of New York PO Box 9 Albany NY 122010009 141368361 501c3 7653 Monitoring in Lake Ontario University of Wisconsin-Green Bay 2420 Nicolet Dr Green Bay WI 54311 391805963 170a1 40952 Monitoring algal blooms and dissolved oxygen concentrations around commercial fishing operations University of Wisconsin-Milwaukee PO Box 340 Milwaukee WI 532010340 391805963 170a1 165009 Monitoring programs in Lake Michigan Upstate Freshwater Institute 224 Midler Park Drive Syracuse NY 13206 222467379 501c3 91480 Year-round Real-time Monitoring of the Lake Ontario Nearshore 17 Part I Line 2 GLOS reviews requested period progress reports from the grantees. GLOS also monitors the grants by reviewing the expenses charged to the invoices against budgeted expenses. X false false false false false false false false false Jennifer Boehme Chief Executive Officer 162805 16638 21131 200574 Tim Kearns Chief Information Officer 180997 17311 19692 218000 Tim Kearns Key employee Repayment of Canadian payroll taxes X 74370 74370 false true true 74370 Part II Line 1 The receivable from Tim Kearns was in connection with settling outstanding payroll taxes with the Canadian government. GLOS received payment from Mr. Kearns in January 2026 for the outstanding balance at June 30, 2025. Form 990, Part VI, Section B, Line 11b The CEO and Financial Manager review the Form 990 prior to filing. The Board Treasurer presents it to the Board. Form 990, Part VI, Section B, Line 12c Each board member is briefed on the GLOS board/staff conflict of interest policies in the bylaws when they are appointed. Members are required to self-identify issues or situations in which they are in real or perceived conflict, and the board then follows procedures for managing the conflict as outlined in the bylaws. Form 990, Part VI, Section B, Line 15a The GLOS Board reviewed and approved the CEOs salary. Form 990, Part VI, Section C, Line 19 The organizations governing documents, conflict of interest policy, and financial statements are available to the public upon request.