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Who

Stavros G. Vizirgianakis

Director

Company insider

Files Form 4 as: Director, Xtant Medical Holdings; Director, Apyx Medical; Director, Bioventus; President and CEO, Misonix.

Every Form 4 they filed

In numbers

Trades disclosed
51
Buys
4
Sells
0
Bought
$5.6M
Sold
$0
Companies
4
Companies where not an officer
3
First trade
7 May 2013
Last trade
15 Aug 2026
Last filed
18 Aug 2026

Companies traded

Where they are an officer
MisonixDirector, Officer, 10% owner · last 29 Oct 20213 buys · 0 sells
Everywhere else they filed: board seats, 10% stakes, other companies
XTNT Xtant Medical HoldingsDirector · Medical Devices · last 15 Aug 20261 buy · 0 sells
APYX Apyx MedicalDirector · Medical Devices · last 11 Jun 20260 buys · 0 sells
BVS BioventusDirector · Medical Devices · last 17 Jun 20220 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
101Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
15 Aug 2026filed 18 Aug 2026XTNT Xtant Medical HoldingsMedical DevicesSEC FORM 4 Code A—323,275 at $0.00filing
15 Aug 2026filed 18 Aug 2026XTNT Xtant Medical HoldingsMedical DevicesSEC FORM 4 Code A—323,275 at $0.00filing
11 Jun 2026filed 15 Jun 2026APYX Apyx MedicalMedical DevicesSEC FORM 4 Code A—450,000 at $0.00filing
11 Jun 2026filed 15 Jun 2026APYX Apyx MedicalMedical DevicesSEC FORM 4 Code A—450,000 at $0.00filing
15 Nov 2025filed 18 Nov 2025XTNT Xtant Medical HoldingsMedical DevicesSEC FORM 4 Code A—553,797 at $0.00filing
15 May 2025filed 19 May 2025APYX Apyx Medicaloption or derivative · Medical DevicesSEC FORM 4 Code A—128,000 at $0.00filing
15 Jan 2025filed 17 Jan 2025APYX Apyx Medicaloption or derivative · Medical DevicesSEC FORM 4 Code A—50,000 at $0.00filing
15 Aug 2024filed 19 Aug 2024XTNT Xtant Medical HoldingsMedical DevicesSEC FORM 4 Code A—243,243 at $0.00filing
15 Aug 2024filed 19 Aug 2024XTNT Xtant Medical HoldingsMedical DevicesSEC FORM 4 Code A—505,405 at $0.00filing
8 Aug 2024filed 12 Aug 2024APYX Apyx Medicaloption or derivative · Medical DevicesSEC FORM 4 Code A—17,000 at $0.00filing
15 Aug 2023filed 17 Aug 2023XTNT Xtant Medical Holdingsoption or derivative · Medical DevicesSEC FORM 4 Code A—42,345 at $0.00filing
15 Aug 2023filed 17 Aug 2023XTNT Xtant Medical HoldingsMedical DevicesSEC FORM 4 Code A—217,770 at $0.00filing
15 Nov 2022filed 17 Nov 2022XTNT Xtant Medical HoldingsMedical DevicesSEC FORM 4 Code A—144,639 at $0.00filing
7 Oct 2022filed 11 Oct 2022XTNT Xtant Medical Holdingsoption or derivative · Medical DevicesSEC FORM 4 Code P—566,214 at $0.00filing
7 Oct 2022filed 11 Oct 2022XTNT Xtant Medical HoldingsMedical DevicesSEC FORM 4 Bought$1.1M2,264,861 at $0.48filing
25 Aug 2022filed 26 Aug 2022XTNT Xtant Medical HoldingsMedical DevicesSEC FORM 4 Code A—70,776 at $0.00filing
17 Jun 2022filed 22 Jun 2022BVS Bioventusoption or derivative · Medical DevicesSEC FORM 4 Code A—16,648 at $0.00filing
16 Jun 2022filed 22 Jun 2022BVS Bioventusoption or derivative · Medical DevicesSEC FORM 4 Code M—965 at $0.00filing
16 Jun 2022filed 22 Jun 2022BVS BioventusMedical DevicesSEC FORM 4 Code M—965 at $0.00filing
29 Oct 2021filed 28 Apr 2022BVS BioventusMedical DevicesSEC FORM 4 Code A—2,780,923filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Health Care1
Not placed3

Buys in green, sells in red, by the company’s sector.

Related people

Nobody else traded the same names lately.