Structured intelligence coverage

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Identity checks do not refresh the age of governance evidence. Open a record for its source date and review state.

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
21 current organization shown on this profile
Board positions
11 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 Chief Executive Officer of Misonix, Inc., a medical device company. Extensive career in medical devices field including roles at United States Surgical Corporation and Tyco Healthcare, co-founder of Surgical Innovations.

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

Xtant Medical Holdings, Inc.

2026-06-23 · current

Confirmed by public sourceView source

Chairman of the Board

Xtant Medical Holdings, Inc.

Current · start date not disclosed

Confirmed by public sourceView source

Connections

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

Xtant Medical Holdings, Inc.

Open Xtant Medical Holdings, Inc. profile →

Director at Xtant Medical Holdings, Inc.

2026-06-23 → End not stated

current · source reported

Observed: 2026-09-25

Chairman of the Board at Xtant Medical Holdings, Inc.

Start not stated → End not stated

current · source reported

Observed: 2026-09-25

Xtant Medical Hold…Xtant Medical Holdings, Inc.Stavros G. Vizirgi…

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 Xtant Medical Holdings, Inc. (NYSE: XTNT).Open sourceSource 2 · Sec FilingXTNT 10-K executive officersSupports AI and ML experience, Cybersecurity experience, Executive company, Executive title, Other Company Role, Technology background.Open sourceSource 3 · Sec FilingMDNC 10-K executive officersSupports Executive company, Executive title.Open source

Basis

Identifiers, sources, dates and record limitations.

Identifiers

Alpha ID
alpha:person:stavros-g-vizirgianakis
Record version
public-0

Published evidence records

5 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: Jun 23, 2026 · Retrieved: Sep 2, 2026

    Supports 1 claim
    • Professional Role: Director at Xtant Medical Holdings, Inc. · Claim reviewed: Sep 14, 2026

  2. Open source

    sec def 14a · Source published: Jun 23, 2026 · Retrieved: Sep 14, 2026

    Supports 1 claim
    • Professional Role: Chairman of the Board at Xtant Medical Holdings, Inc. · Claim reviewed: Sep 14, 2026

  3. XTNT 10-K executive officers

    sec filing · Source published: Mar 31, 2026 · Retrieved: May 16, 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 Xtant Medical Holdings, Inc. · Claim reviewed: May 16, 2026
    • Executive title: Executive title: Chairman of the Board and Director · Claim reviewed: May 16, 2026
    • Other Company Role: Stavros G. Vizirgianakis is also linked to Apyx Medical Corporation (NASDAQ: APYX) as Chair of the board of directors. · Claim reviewed: May 16, 2026
    • Technology background: Technology background reported in filings · Claim reviewed: May 16, 2026

  4. MDNC 10-K executive officers

    sec filing · Source published: May 29, 2025 · Retrieved: May 16, 2026

    Supports 2 claims
    • Executive company: Executive at Medinotec Inc. · Claim reviewed: May 16, 2026
    • Executive title: Executive title: Director · Claim reviewed: May 16, 2026

  5. Open source

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

    Supports 1 claim
    • Board membership: Serves on the board of Xtant Medical Holdings, Inc. · Claim reviewed: Sep 14, 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 · Source reportedAI and ML experience: not identified in the cited filing1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Board membership · Source reportedServes on the board of Xtant Medical Holdings, Inc.Supported by 2 public records1 source
Verification
Source reported
Confidence
Not stated
Last reviewed
Not stated
Cybersecurity experience · Source reportedCybersecurity experience: not identified in the cited filing1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

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

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Executive company · Source reportedExecutive at Xtant Medical Holdings, Inc.1 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: Chairman of the Board and Director1 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: Director1 source
Verification
Source reported
Confidence
94%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Other Company Role · Source reportedStavros G. Vizirgianakis is also linked to Apyx Medical Corporation (NASDAQ: APYX) as Chair of the board of directors.1 source
Verification
Source reported
Confidence
70%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

Technology background · Source reportedTechnology background reported in filings1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 16, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 2026

View all sources5 records
  1. https://www.sec.gov/Archives/edgar/data/1453593/000149315226029699/formdef14a.htm

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

    Supports: Director at Xtant Medical Holdings, Inc. (NYSE: XTNT)

  2. https://www.sec.gov/Archives/edgar/data/1453593/000149315226029699/formdef14a.htm

    Sec Def 14a · Tier not stated · Reviewed Sep 14, 2026

    Supports: Chairman of the Board at Xtant Medical Holdings, Inc. (NYSE: XTNT)

  3. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 16, 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. https://www.sec.gov/Archives/edgar/data/1453593/000149315226029699/formdef14a.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership