Xtant Medical Holdings XTNT Insider Ownership

NYSE XTNT

$0.31 +0.01 (+2.01%)

As of: Oct 21, 2026 · 1:42 PM EDT

Insider Holdings by Owner

28.62Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

11.33%

▲+0.348% pp QoQ

Shares Held by Insiders

15.89Mn

filed for Sep 2026

▲+3.17% QoQ

Shares Outstanding

140.26Mn

140,262,960 shares

Direct Holdings

15.89Mn

Indirect: 0

Net Shares Traded (QoQ)

+488.50K

net buying in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 10, 2026

Over the past 12 months, Xtant Medical Holdings insiders made no open-market purchases or sales of the stock.

Outside the open market, Xtant Medical Holdings insiders received 3.6Mn shares in stock awards and gave up 61.62K shares to cover taxes or exercise prices over the past 12 months.
According to Business Quant data, insiders at Xtant Medical Holdings reported 15.89Mn shares in total in their latest Form 4 filings, up 3.17% from 15.4Mn shares at the end of Q2 2026 and up 19.62% from 13.28Mn shares at the end of Q3 2025.
None of the 15.89Mn shares held by Xtant Medical Holdings insiders is held through trusts, partnerships or family members; all are direct holdings.
XTNT's insider total is spread across 8 insiders who have filed a Form 4 in the past two years.
Xtant Medical Holdings' three biggest insider holders are Stavros G. Vizirgianakis (Director, 7.84Mn shares), Sean E. Browne (President and CEO, 3.11Mn shares) and Scott C. Neils (CFO and Assistant Secretary, 1.22Mn shares), based on their latest Form 4 filings.
The largest insider, Stavros G. Vizirgianakis, holds 49.35% of XTNT's insider total.
Institutions owned 57.22% of XTNT shares as of Q2 2026; insiders' latest Form 4 filings account for about 11.33%, leaving roughly 31.45% with other investors, including the public.
A total of 19 Form 4 filings with transactions in Xtant Medical Holdings stock were made over the past 12 months, by 8 insiders.
Insider figures for XTNT include Form 4 filings through August 18, 2026.

Form 4 Holdings

Insiders Holding XTNT

Insiders 15

Shares held 28.62Mn

Of outstanding 20.41%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Stavros G. Vizirgianakis	Director	13,834,200	0	13,834,200	48.3%	18 Aug, 2026
2	Sean E Browne	President And Ceo	4,621,253	0	4,621,253	16.1%	18 Aug, 2026
3	Kevin D Brandt	Chief Commercial Officer	1,647,307	0	1,647,307	5.8%	19 Aug, 2024
4	Scott C Neils	Cfo And Assistant Secretary	1,619,186	0	1,619,186	5.7%	18 Aug, 2026
5	John K Bakewell	Director	1,578,179	0	1,578,179	5.5%	18 Aug, 2026
6	Robert Mcnamara	Director	1,200,960	0	1,200,960	4.2%	19 Aug, 2024
7	Mark A. Schallenberger	Chief Operating Officer	1,195,087	0	1,195,087	4.2%	18 Aug, 2026
8	Jonn R. Beeson	Director	733,136	0	733,136	2.6%	18 Aug, 2026
9	Jeffrey J Peters	Director	448,546	0	448,546	1.6%	17 Aug, 2022
10	Abhinav Jain	Director	373,745	0	373,745	1.3%	18 Aug, 2026
11	Tyler Lipschultz	Director	373,745	0	373,745	1.3%	18 Aug, 2026
12	Lori D Mitchell-Keller	Director	353,124	0	353,124	1.2%	19 Aug, 2024
13	Michael Eggenberg	Director, TenPercentOwner	215,415	0	215,415	0.8%	17 Aug, 2022
14	Matthew Rizzo	Director, TenPercentOwner	215,415	0	215,415	0.8%	17 Aug, 2022
15	Advisors Llc Orbimed	Director, TenPercentOwner	0	215,415	215,415	0.8%	17 Aug, 2022

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

463 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
15 Aug, 2026	Jonn R. Beeson	Director	Acquired A	215,517	$0.00	$0	733,136	Direct
15 Aug, 2026	Abhinav Jain	Director	Acquired A	215,517	$0.00	$0	373,745	Direct
15 Aug, 2026	Stavros G. Vizirgianakis	Director	Acquired A	323,275	$0.00	$0	7,838,845	Direct
15 Aug, 2026	Tyler Lipschultz	Director	Acquired A	215,517	$0.00	$0	373,745	Direct
15 Aug, 2026	John K Bakewell	Director	Acquired A	215,517	$0.00	$0	1,129,633	Direct
15 Aug, 2026	Scott C Neils	Cfo And Assistant Secretary	Acquired A	400,000	$0.00	$0	1,243,381	Direct
15 Aug, 2026	Mark A. Schallenberger	Chief Operating Officer	Acquired A	450,000	$0.00	$0	1,113,157	Direct
15 Aug, 2026	Sean E Browne	President And Ceo	Acquired A	550,000	$0.00	$0	3,125,274	Direct
15 Aug, 2026	Scott C Neils	Cfo And Assistant Secretary	Disposed F	28,155	$0.31	$8.73K	1,215,226	Direct
15 Aug, 2026	Sean E Browne	President And Ceo	Disposed F	10,605	$0.31	$3.29K	3,114,669	Direct
15 Aug, 2026	Mark A. Schallenberger	Chief Operating Officer	Disposed F	7,070	$0.31	$2.19K	1,106,087	Direct
15 Feb, 2026	Mark A. Schallenberger	Chief Operating Officer	Disposed F	7,709	$0.58	$4.47K	663,157	Direct
15 Jan, 2026	Scott C Neils	Cfo And Assistant Secretary	Disposed F	8,084	$0.65	$5.25K	843,381	Direct
15 Nov, 2025	John K Bakewell	Director	Acquired A	158,228	$0.00	$0	914,116	Direct
15 Nov, 2025	Scott C Neils	Cfo And Assistant Secretary	Acquired A	263,291	$0.00	$0	851,465	Direct
15 Nov, 2025	Sean E Browne	President And Ceo	Acquired A	394,937	$0.00	$0	2,575,274	Direct
15 Nov, 2025	Stavros G. Vizirgianakis	Director	Acquired A	553,797	$0.00	$0	7,515,570	Direct
15 Nov, 2025	Tyler Lipschultz	Director	Acquired A	158,228	$0.00	$0	158,228	Direct
15 Nov, 2025	John K Bakewell	Director	Acquired A	158,228	$0.00	$0	158,228	Direct
15 Nov, 2025	Mark A. Schallenberger	Chief Operating Officer	Acquired A	292,253	$0.00	$0	670,866	Direct

Showing 1 to 20 of 463 transactions