Matthew Brown

Matthew Brown is a public UAP claimant who says he authored the Immaculate Constellation memo, a congressional exhibit tied to the disputed Immaculate Constellation allegation.¹²³⁴

This dossier treats Brown's employment history, discovery narrative, retaliation account, and later program descriptions as self-claims unless they are independently reflected in the public hearing record or official reports cited below.^51234678

  Verified Public Record

Congress.gov records a House Oversight hearing titled "Unidentified Anomalous Phenomena: Exposing the Truth" on November 13, 2024, with witnesses Michael Gold, Michael Shellenberger, Luis Elizondo, and Tim Gallaudet.³

The same hearing page lists a supporting document titled "UC - Mace - Report - Immaculate Constellation - Pentagon," added to the record on November 13, 2024.³⁴

Brown was not listed by Congress.gov as a witness for that hearing, and the public hearing page does not publish a personnel file, clearance record, or sworn statement from him.³

Shellenberger's written testimony described the Immaculate Constellation source as a current or former U.S. government official acting as a UAP whistleblower, but that testimony did not publicly name Brown.⁹

  Brown's Self-Claims

Brown states that he was born in southern California in 1991, moved to Washington, D.C. in 2015, and first worked in the national-security enterprise as a Department of Defense contractor focused on weapons-of-mass-destruction proliferation.⁵

He says he worked at the Pentagon, gained relevant clearances by 2018, reviewed UAP videos, reports, telemetry, and other data on government systems, and found an "Immaculate Constellation Briefing" while performing archive duty.⁵

Brown says he treated that briefing as a classified spillage, reported it through channels, and concluded from the response that some UAP material was held behind access barriers unavailable to the broader TS/SCI community.⁵

He says he met with Senate Select Committee on Intelligence staff on August 17, 2023, later expected follow-up engagement with armed-services and intelligence committees, and understood from that process that the SAPs he described had not been reported to Congress.¹

Brown says he was an active State Department employee when he submitted a redacted report through the Department of State Bureau of Global Public Affairs, and he says State approved it for public release in summer 2024 with no redactions.¹

He says he met Shellenberger in California before Shellenberger's October 2024 reporting, then worked with Shellenberger and Jeremy Corbell before Corbell delivered a marked final copy for congressional submission.¹

Brown says he left State Department headquarters on April 22, 2025 after cuts associated with the Department of Government Efficiency, then allowed the Weaponized interview series to publish on April 29, 2025.²

  The Memo

The public memo alleges that Immaculate Constellation is an unacknowledged special access program created after the 2017 public AATIP reporting and used to collect or quarantine UAP imagery, MASINT, HUMINT, and related records.⁴⁹

The memo describes alleged incident categories involving orbs, discs, ovals, triangles, boomerangs, arrowheads, and irregular objects, but the public exhibit does not include the underlying videos, sensor files, file hashes, witness names, unit identifiers, dates, locations, or chain-of-custody records needed to test those incident narratives independently.⁴⁹

Shellenberger testified that the alleged source said Immaculate Constellation acted as a central or parent USAP, and he also reported DoD spokesperson Sue Gough's denial that DoD had any present or historical record of a SAP by that name.⁹

  Media Appearances

Brown's public identity emerged through Corbell and George Knapp's Weaponized interview series, which Brown says was released on April 29, 2025.²

Weaponized later promoted the three-part Brown series as an Immaculate Constellation interview series and, in March 2026, released a follow-up episode in which Brown expanded his assertions about a layered UAP data operation and alleged post-disclosure pressure.¹⁰

Those appearances are primary sources for what Brown says publicly, but they do not by themselves authenticate the alleged program, the original briefing, or the underlying UAP records.²¹⁰⁶⁷⁸

  Official Denials

An ODNI FOIA release dated November 6, 2024 summarized press reporting about the alleged program and included Gough's statement that DoD had no present or historical record of any SAP called Immaculate Constellation.⁶

AARO's February 2024 historical report said it found no evidence that any U.S. government investigation, academic-sponsored research, or official review panel confirmed a UAP sighting as extraterrestrial technology.⁷

The same AARO report said it found no empirical evidence that the U.S. government or private companies had reverse-engineered extraterrestrial technology, and it attributed many hidden-program allegations to misidentified sensitive programs or circular reporting.⁷

ODNI and DoD's FY 2024 UAP annual report said AARO received 757 UAP reports for the reporting period, resolved 118 cases as prosaic objects, finalized another 174 cases as prosaic, and had discovered no evidence of extraterrestrial beings, activity, or technology.⁸

  Evidence Gaps

The public record cited here confirms that an Immaculate Constellation document entered a congressional hearing packet, that Shellenberger testified about an anonymous source, that Brown later claimed authorship, and that official agencies denied or did not corroborate the alleged program.^12349678

The same record does not provide Brown's personnel file, clearance record, State prepublication email, spillage report, inspector-general docket, original briefing deck, source-system logs, raw imagery, or corroborating sworn testimony from a named official with direct program access.^512349678

The State Department clearance claim is especially limited in public because Brown says State approved his public report, while DoD and ODNI sources deny that a DoD SAP by the Immaculate Constellation name exists in their records.¹⁶

  Why The Dossier Is Disputed

The strongest public support for Brown's account is procedural rather than evidentiary: the memo reached a congressional hearing record, Shellenberger testified about the allegation, Brown later identified himself as author, and Brown has repeated his account in public venues.^1210349

The strongest public challenge is that the central claim remains unverified by raw records, official confirmation, or named corroborating witnesses, while ODNI, DoD, and AARO public materials either deny the named SAP or report no evidence for extraterrestrial technology programs.⁴⁶⁷⁸

A careful reading therefore leaves Brown's Immaculate Constellation story as a serious public allegation with congressional visibility, not as a verified government program in the public record.^1349678

  References

  References

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7. aaro.mil ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸

8. dni.gov ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷

9. congress.gov ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸

10. storytel.com ↩ ↩² ↩³