Structured intelligence coverage

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Profile

Identity, professional record and current appointments.

Overview

Professional record at a glance

A concise summary of information supported by the cited public sources. Missing information is treated as unknown, not as a negative finding.

Current roles
22 current organizations shown on this profile
Board positions
22 supported by public sources, 0 supplied by the profile owner
Committee roles
Not establishedNo committee role is currently confirmed by the cited sources
Qualifications
Not establishedNo qualification is currently confirmed by the cited sources

Professional narrative

About

Former CEO (November 2020 to May 2023) and Managing General Partner of Brookstone Partners since 2003. Brings strategic and financial expertise from private equity and investment banking background.

Sources are shown with the information they support.

Current roles

Appointments & responsibilities

Board appointments

Governance

Board appointments, committee responsibilities and disclosed relationships.

Committee appointments across companies · Temporarily unavailable

Structured records for this section are unavailable. This does not establish that no records exist. Published profile sources remain in Evidence & History.

Board and advisory record

Board service

Sources are shown with each role, education record, or credential.

Director

Capstone Holding Corp.

2017-01-01 · current

Confirmed by public sourceView source

Director

Soluna Holdings, Inc

2016-01-01 · current

Confirmed by public sourceView source

Connections

Explore the roles, education and affiliations published in this record.

Capstone Holding Corp.

Open Capstone Holding Corp. profile →

Director at Capstone Holding Corp.

2017-01-01 → End not stated

current · source reported

Observed: 2026-09-26

Capstone Holding C…Capstone Holding Corp.Soluna Holdings, IncSoluna Holdings, IncMichael Toporek

Dashed lines mark past roles. Select a connection to see its dates and sources.

Relationship map

Connected through the public record

Direct relationships from verified facts and published résumé records. Private connections are excluded.

Direct public links only

Only published affiliations are shown here. Private relationships require authorized access.

Experience

Career history, education, credentials and public contributions.

Published record

Featured coverage

Selected publications and public sources used to establish this profile. Inclusion records provenance; it is not an endorsement.

Source 1 · Sec ProxyPublic profile sourceSupports Director at Soluna Holdings, Inc (NASDAQ: SLNHP).Open sourceSource 2 · Sec FilingCAPS 10-K executive officersSupports Executive company, Executive title.Open sourceSource 3 · Sec FilingSLNHP 10-K executive officersSupports AI and ML experience, Cybersecurity experience, Executive company, Executive title, Other Company Role, Technology background.Open sourceSource 4 · Sec FilingCAPS DEF 14A director slateSupports AI and ML experience, Board role, Committee assignments, Executive company, Executive title, Cybersecurity experience, Technology background.Open source

Basis

Identifiers, sources, dates and record limitations.

Identifiers

Alpha ID
alpha:person:michael-toporek
Record version
public-0

Published evidence records

8 evidence records, matching Agent View. Records may refer to different locations or observations in the same document. This count is not a count of independent corroborating sources.

  1. Open source

    sec proxy · Source published: Aug 24, 2026 · Retrieved: Sep 2, 2026

    Supports 1 claim
    • Professional Role: Director at Soluna Holdings, Inc · Claim reviewed: May 16, 2026

  2. CAPS 10-K executive officers

    sec filing · Source published: Apr 16, 2026 · Retrieved: May 16, 2026

    Supports 2 claims
    • Executive company: Executive at Capstone Holding Corp. · Claim reviewed: May 16, 2026
    • Executive title: Executive title: Chairman of the Board · Claim reviewed: May 16, 2026

  3. SLNHP 10-K executive officers

    sec filing · Source published: Mar 30, 2026 · Retrieved: Jul 28, 2026

    Supports 6 claims
    • AI and ML experience: AI and ML experience: not identified in the cited filing · Claim reviewed: May 16, 2026
    • Cybersecurity experience: Cybersecurity experience: not identified in the cited filing · Claim reviewed: May 16, 2026
    • Executive company: Executive at Soluna Holdings, Inc. · Claim reviewed: Jul 28, 2026
    • Executive title: Executive title: Executive Chairman of the Board of Directors · Claim reviewed: Jul 28, 2026
    • Other Company Role: Michael Toporek is also linked to Capstone Holding Corp. as Chairman of the board of directors. · Claim reviewed: May 16, 2026
    • Technology background: Technology background: not identified in the cited filing · Claim reviewed: May 16, 2026

  4. SLNH 10-K executive officers

    sec filing · Source published: Mar 30, 2026 · Retrieved: May 16, 2026

    Supports 2 claims
    • Executive company: Executive at Soluna Holdings, Inc. · Claim reviewed: Jul 28, 2026
    • Executive title: Executive title: Executive Chairman of the Board of Directors · Claim reviewed: Jul 28, 2026

  5. CAPS DEF 14A director slate

    sec filing · Source published: Oct 1, 2025 · Retrieved: May 15, 2026

    Supports 7 claims
    • AI and ML experience: AI and ML experience: not identified in the cited filing · Claim reviewed: May 16, 2026
    • Board role: Board role: Chair · Claim reviewed: May 15, 2026
    • Committee assignments: No committee assignment disclosed in the cited filing · Claim reviewed: May 15, 2026
    • Cybersecurity experience: Cybersecurity experience: not identified in the cited filing · Claim reviewed: May 16, 2026
    • Executive company: Executive at Soluna Holdings, Inc. · Claim reviewed: Jul 28, 2026
    • Executive title: Executive title: Executive Chairman · Claim reviewed: May 15, 2026
    • Technology background: Technology background: not identified in the cited filing · Claim reviewed: May 16, 2026

  6. Open source

    sec proxy · Source published: Oct 1, 2025 · Retrieved: Apr 28, 2026

    Supports 1 claim
    • Professional Role: Director at Capstone Holding Corp. · Claim reviewed: May 16, 2026

  7. Open source

    public source · Source published: Date unavailable · Retrieved: Date unavailable

    Supports 1 claim
    • Board membership: Serves on the board of Capstone Holding Corp. · Claim reviewed: May 16, 2026

  8. Open source

    public source · Source published: Date unavailable · Retrieved: Date unavailable

    Supports 1 claim
    • Board membership: Serves on the board of Soluna Holdings, Inc · Claim reviewed: May 16, 2026

Sources

Sources and published information

Each item links to the public source used to support it. When sources disagree, the item is clearly marked for review.

AI and ML experience · CorroboratedAI and ML experience: not identified in the cited filingSupported by 2 public records2 sources
Verification
Corroborated
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

Board membership · Source reportedServes on the board of Capstone Holding Corp.1 source
Verification
Source reported
Confidence
Not stated
Last reviewed
Not stated
Board membership · Source reportedServes on the board of Soluna Holdings, Inc1 source
Verification
Source reported
Confidence
Not stated
Last reviewed
Not stated
Board role · Source reportedBoard role: Chair1 source
Verification
Source reported
Confidence
92%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Committee assignments · Source reportedNo committee assignment disclosed in the cited filing1 source
Verification
Source reported
Confidence
88%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Cybersecurity experience · CorroboratedCybersecurity experience: not identified in the cited filingSupported by 2 public records2 sources
Verification
Corroborated
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

Executive company · Source reportedExecutive at Capstone Holding Corp.1 source
Verification
Source reported
Confidence
94%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Executive company · CorroboratedExecutive at Soluna Holdings, Inc.Supported by 3 public records3 sources
Verification
Corroborated
Confidence
94%
Last reviewed
Jul 28, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

Executive title · Source reportedExecutive title: Chairman of the Board1 source
Verification
Source reported
Confidence
94%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Executive title · Source reportedExecutive title: Executive Chairman1 source
Verification
Source reported
Confidence
85%
Last reviewed
May 15, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

Executive title · CorroboratedExecutive title: Executive Chairman of the Board of DirectorsSupported by 2 public records2 sources
Verification
Corroborated
Confidence
94%
Last reviewed
Jul 28, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

Other Company Role · Source reportedMichael Toporek is also linked to Capstone Holding Corp. as Chairman of the board of directors.1 source
Verification
Source reported
Confidence
70%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

Technology background · CorroboratedTechnology background: not identified in the cited filingSupported by 2 public records2 sources
Verification
Corroborated
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

View all sources8 records
  1. https://www.sec.gov/Archives/edgar/data/64463/000162828026058611/slnh-20260824.htm

    Sec Proxy · Tier not stated · Reviewed Sep 2, 2026

    Supports: Director at Soluna Holdings, Inc (NASDAQ: SLNHP)

  2. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

    Supports: Executive company · Executive title

  3. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed Jul 28, 2026

    Supports: AI and ML experience · Cybersecurity experience · Executive company · Executive title · Other Company Role · Technology background

  4. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

    Supports: Executive company · Executive title

  5. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 15, 2026

    Supports: AI and ML experience · Board role · Committee assignments · Executive company · Executive title · Cybersecurity experience · Technology background

  6. https://www.sec.gov/Archives/edgar/data/887151/000121390025094745/ea0257860-02.htm

    Sec Proxy · Tier not stated · Reviewed Apr 28, 2026

    Supports: Director at Capstone Holding Corp. (NASDAQ: CAPS)

  7. https://www.sec.gov/Archives/edgar/data/887151/000121390025094745/ea0257860-02.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership

  8. https://www.sec.gov/Archives/edgar/data/64463/000162828026058611/slnh-20260824.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership