{"url":"https://nivawealth.com/firms/green-century-capital-management-112442","iapdUrl":"https://adviserinfo.sec.gov/firm/summary/112442","regulatoryAum":1358315122,"crd":"112442","history":[{"filedOn":"2020-09-21","regulatoryAum":726102159,"clients":4,"employees":17,"offices":1},{"filedOn":"2022-05-25","regulatoryAum":1053780845,"clients":4,"employees":13,"offices":1},{"filedOn":"2022-09-22","regulatoryAum":998345717,"clients":4,"employees":11,"offices":1},{"filedOn":"2023-09-26","regulatoryAum":1123846320,"clients":4,"employees":13,"offices":1},{"filedOn":"2024-09-30","regulatoryAum":1284681138,"clients":4,"employees":15,"offices":1},{"filedOn":"2025-09-30","regulatoryAum":1258196265,"clients":4,"employees":16,"offices":1},{"filedOn":"2026-09-30","regulatoryAum":1358315122,"clients":4,"employees":16,"offices":1}],"secFileNumber":"801-39630","legalName":"Green Century Capital Management Inc","displayName":"Green Century Capital Management","slug":"green-century-capital-management-112442","website":"https://greencentury.com/","classification":{"segment":"registered_funds","segmentLabel":"Fund management","type":"fund_manager","typeLabel":"Mutual funds & ETFs","feeDisclosure":"payment_only"},"linkedinUrl":"https://www.linkedin.com/company/green-century-capital-management/","xUrl":"https://x.com/green__century","founded":null,"organization":"Massachusetts corporation","fiscalYearEnd":"June","headquarters":{"street":"22 Batterymarch Street Street Suite 5a","city":"Boston","state":"MA","stateName":"Massachusetts","country":"United States","postalCode":"02109-2424"},"tradeNames":[],"registration":{"secApproved":"15 August 1991","noticeFilings":null,"latestNoticeFiling":null},"wealthAumPerClient":null,"staff":{"employees":16,"advisory":6,"brokerDealerReps":3,"insuranceAgents":0,"promoters":0},"aum":{"regulatory":1358315122,"discretionary":1358315122,"discretionaryAccounts":4,"nonDiscretionary":0,"nonDiscretionaryAccounts":0,"wrapProgram":null,"nonUsClientsPct":0,"nonAumClients":0},"clientTypes":[{"label":"Investment companies","clients":3,"regulatoryAum":1357770937},{"label":"Other","clients":1,"regulatoryAum":544185}],"feePrograms":[],"brochureCoverage":{"scope":"known_documents","status":"not_processed","checkedAt":null,"documents":[]},"custodians":[{"name":"Umb Financial Services, Inc.","shortName":"Umb Financial Services","location":"Kansas City, MO","smaAssets":127757}],"custodyNote":"Green Century Capital Management does not have custody of client assets.","otherCustodians":[],"leadership":[{"name":"Leslie Samuelrich","title":"President","crd":"6245037"},{"name":"Joseph Guerin","title":"Chief Compliance Officer","crd":"5604479"},{"name":"Kristina Curtis","title":"Director","crd":"2419122"},{"name":"Andre Delattre","title":"Director","crd":"7533522"},{"name":"Matthew Dunlap","title":"Senior Finance Manager - Treasurer","crd":"7428354"},{"name":"Joseph Guerin","title":"Clerk","crd":"5604479"},{"name":"Douglas Phelps","title":"Director","crd":"4392804"},{"name":"Wendy Wendlandt","title":"Director","crd":"5144999"}],"ownership":[{"label":"Paradigm Partners","detail":"Shareholder in the 75% or more ownership band and a control person, since August 1991."},{"label":"Massachusetts Public Interest Research Group, Inc.","detail":"Indirect owner: partner of Paradigm Partners and a control person, since August 1991.","parent":"Paradigm Partners"},{"label":"Fund for the Public Interest, Inc.","detail":"Indirect owner: partner of Paradigm Partners and a control person, since August 1991.","parent":"Paradigm Partners"},{"label":"New Jersey Public Interest Research Group Citizen Lobby, Inc.","detail":"Indirect owner: partner of Paradigm Partners and a control person, since August 1991.","parent":"Paradigm Partners"},{"label":"Connpirg Citizen Lobby, Inc.","detail":"Indirect owner: partner of Paradigm Partners and a control person, since September 1992.","parent":"Paradigm Partners"},{"label":"California Public Interest Research Group, Inc.","detail":"Indirect owner: partner of Paradigm Partners and a control person, since August 1991.","parent":"Paradigm Partners"},{"label":"Washington State Public Interest Research Group, Inc.","detail":"Indirect owner: partner of Paradigm Partners and a control person, since June 1992.","parent":"Paradigm Partners"},{"label":"Missouri Public Interest Research Group Citizen Organization, Inc.","detail":"Indirect owner: partner of Paradigm Partners and a control person, since May 1992.","parent":"Paradigm Partners"},{"label":"Pirgim Public Interest Lobby, Inc.","detail":"Indirect owner: partner of Paradigm Partners and a control person, since February 1993.","parent":"Paradigm Partners"},{"label":"Colorado Public Interest Research Group, Inc.","detail":"Indirect owner: partner of Paradigm Partners and a control person, since May 1992.","parent":"Paradigm Partners"}],"branchOffices":null,"filedOffices":{"otherThanPrincipal":0,"privateResidences":0},"listedOfficeAddresses":1,"foreignOffices":[],"officesByState":[{"state":"Massachusetts","offices":1,"addresses":[{"street":"22 Batterymarch Street Street Suite 5a","city":"Boston","headquarters":true}]}],"advFacts":{"source":{"file":"ia100226.zip","asOf":"2 October 2026"},"telephone":"617-482-0800","stateRegisteredReps":0,"otherAdviserReps":0,"compensation":["A percentage of assets under management"],"activities":["Portfolio management for investment companies","Selection of other advisers (including private fund managers)"],"financialPlanningClients":null,"assetMix":[{"label":"Exchange-traded equity securities","percent":100}],"privateFunds":0},"sources":{"adv1FilingDate":"30 September 2026","adv1Url":"https://reports.adviserinfo.sec.gov/reports/ADV/112442/PDF/112442.pdf","brochureDate":null,"brochureUrl":null,"iapdCompiledDate":null,"retrievedDate":"15 October 2026","retrievedOn":"2026-10-15","updatedOn":"2026-10-21","holdingsUpdatedOn":"2026-10-21","adv1Pages":{},"brochurePages":{}},"otherBusiness":[],"faq":[{"question":"How many clients does Green Century Capital Management have?","answer":"Green Century Capital Management has 4 clients and manages $1.36 billion for them, as of September 2026. They include 3 investment companies and 1 other client.","source":"Form ADV Part 1A, Items 5.D and 5.F, filed 30 September 2026","sourceRef":{"doc":"adv1","section":"employees"}},{"question":"What services does Green Century Capital Management offer?","answer":"Green Century Capital Management provides portfolio management for investment companies and selecting other managers.","source":"Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file","sourceRef":{"doc":"adv1","section":"employees"}},{"question":"Which custodians does Green Century Capital Management use?","answer":"Green Century Capital Management’s separately managed account assets are held at Umb Financial Services, Inc. (Kansas City, MO), with $128K. Only custodians holding at least a tenth of those assets are named.","source":"Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 30 September 2026","sourceRef":{"doc":"adv1","section":"custodians"}},{"question":"How many financial advisors does Green Century Capital Management have?","answer":"Green Century Capital Management has 0 investment adviser representatives registered with state securities authorities, out of 16 employees, and 6 perform investment advisory functions. 3 employees are registered representatives of a broker-dealer and 0 employees are licensed insurance agents.","source":"Form ADV Part 1A, Items 5.A and 5.B, from the SEC's 2 October 2026 data file","sourceRef":{"doc":"adv1","section":"employees"}},{"question":"What does Green Century Capital Management invest in?","answer":"At the end of its last fiscal year, Green Century Capital Management’s separately managed accounts held 100% exchange-traded equities.","source":"Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file","sourceRef":{"doc":"adv1","section":"employees"}},{"question":"Who owns Green Century Capital Management?","answer":"Green Century Capital Management’s direct owner is Paradigm Partners (75% or more).","source":"Form ADV Part 1A, Schedules A and B, filed 30 September 2026","sourceRef":{"doc":"adv1","section":"scheduleA"}},{"question":"How does Green Century Capital Management get paid?","answer":"Green Century Capital Management is paid through a percentage of assets under management. Its Form ADV lists no commissions or performance-based fees among how it is paid.","source":"Form ADV Part 1A, Item 5.E, from the SEC's 2 October 2026 data file","sourceRef":{"doc":"adv1","section":"employees"}},{"question":"How do I contact Green Century Capital Management?","answer":"Green Century Capital Management’s main office is at 22 Batterymarch Street Street Suite 5a, Boston, MA 02109-2424. Its phone number is 617-482-0800. Its website is greencentury.com.","source":"Form ADV Part 1A, Item 1.F, filed 30 September 2026","sourceRef":{"doc":"adv1","section":"offices"}}],"holdings":null,"notice":"Compiled from public SEC Form ADV filings on the dates in `sources`. Facts as filed; not a rating, ranking, or recommendation. Niva is not affiliated with this firm. Disciplinary history is deliberately not included here or on the page; the SEC publishes the complete record at the `iapdUrl` above."}