Beta Bionics BBNX Insider Ownership

NASDAQ BBNX

$18.39 +0.65 (+3.66%)

As of: Oct 21, 2026 · 2:12 PM EDT

Insider Holdings by Owner

5.06Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

11.37%

▼-0.269% pp QoQ

Shares Held by Insiders

5.07Mn

filed for Sep 2026

▼-2.31% QoQ

Shares Outstanding

44.55Mn

44,545,293 shares

Direct Holdings

5.07Mn

Indirect: 0

Net Shares Traded (QoQ)

-119.73K

net selling 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 8, 2026

Over the past 12 months, Beta Bionics insiders sold $5.1 million of stock on the open market (263.68K shares) and made no open-market purchases.

Beta Bionics' open-market sales in the past 12 months came from 8 insiders; no insider bought.
The largest open-market sales of BBNX in the past 12 months were by Mark Hopman (Chief Commercial Officer), totaling $2.19 million (118.16K shares), most recently on October 1, 2026.
Apart from open-market trades, BBNX insiders received 604.88K shares in stock awards and acquired 34.98K shares through option exercises and conversions in the past 12 months.
According to Business Quant data, insiders at Beta Bionics reported 5.07Mn shares in total in their latest Form 4 filings, or 11.37% of the 44.55Mn shares outstanding; that total is down 2.32% from 5.19Mn shares at the end of Q2 2026 and up 17.53% from 4.31Mn shares at the end of Q3 2025.
By type of ownership, BBNX insiders hold all of their 5.07Mn shares directly.
BBNX's insider total is spread across 12 insiders who have filed a Form 4 in the past two years.
Beta Bionics' three largest insider shareholders, based on their latest Form 4 filings, are Wellington Hadley Harbor Aggregator IV, L.P. (10% owner, 3.9Mn shares), Sean Saint (President & CEO, 398.43K shares) and Mike Mensinger (Chief Product Officer, 177.39K shares).
Wellington Hadley Harbor Aggregator IV, L.P. alone accounts for 77.03% of the shares held by Beta Bionics insiders.
Over the past 12 months, 11 insiders reported transactions in Beta Bionics stock in 57 Form 4 filings.
These insider figures for Beta Bionics are based on Form 4 filings through October 5, 2026.

Form 4 Holdings

Insiders Holding BBNX

Insiders 12

Shares held 5.06Mn

Of outstanding 11.37%

#	Insider	Position	Direct	Total	Share of Insiders	Last Filed
1	Hadley Harbor Aggregator Iv, L.P. Wellington	TenPercentOwner	3,901,599	3,901,599	77.0%	03 Feb, 2025
2	Sean Saint	President Ceo	398,429	398,429	7.9%	04 Sep, 2026
3	Mike Mensinger	Chief Product Officer	177,390	177,390	3.5%	17 Sep, 2026
4	Steven Jon Russell	Chief Medical Officer	169,628	169,628	3.3%	03 Sep, 2026
5	Stephen Feider	Chief Financial Officer	159,378	159,378	3.1%	03 Sep, 2026
6	Adam Lezack	Director	55,796	55,796	1.1%	26 May, 2026
7	Mark Hopman	Chief Commercial Officer	55,334	55,334	1.1%	16 Oct, 2026
8	Gerard J Michel	Director	33,509	33,509	0.7%	26 May, 2026
9	Danny L. Dearen	Director	32,209	32,209	0.6%	26 May, 2026
10	Sean Carney	Director	32,209	32,209	0.6%	26 May, 2026
11	Maria Palasis	Director	29,397	29,397	0.6%	26 May, 2026
12	Christy Jones	Director	19,564	19,564	0.4%	23 Sep, 2026

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

195 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
14 Oct, 2026	Mark Hopman	Chief Commercial Officer	Disposed S	775	$17.35	$13.45K	55,334	Direct
01 Oct, 2026	Mark Hopman	Chief Commercial Officer	Disposed S	370	$18.96	$7.02K	56,109	Direct
22 Sep, 2026	Christy Jones	Director	Disposed S	6,430	$23.00	$147.89K	19,564	Direct
09 Sep, 2026	Mark Hopman	Chief Commercial Officer	Disposed S	35,994	$18.46	$664.55K	88,033	Direct
16 Sep, 2026	Mark Hopman	Chief Commercial Officer	Disposed S	30,779	$20.13	$619.64K	56,479	Direct
16 Sep, 2026	Mike Mensinger	Chief Product Officer	Disposed S	2,650	$22.00	$58.30K	177,390	Direct
14 Sep, 2026	Mark Hopman	Chief Commercial Officer	Disposed S	775	$15.52	$12.03K	86,382	Direct
09 Sep, 2026	Mark Hopman	Chief Commercial Officer	Disposed S	36,870	$18.46	$680.72K	87,157	Direct
03 Sep, 2026	Sean Saint	President Ceo	Disposed S	5,641	$20.08	$113.26K	398,429	Direct
02 Sep, 2026	Mark Hopman	Chief Commercial Officer	Disposed S	5,327	$19.11	$101.82K	124,027	Direct
02 Sep, 2026	Steven Jon Russell	Chief Medical Officer	Disposed S	4,221	$19.11	$80.68K	169,628	Direct
02 Sep, 2026	Stephen Feider	Chief Financial Officer	Disposed S	6,675	$19.11	$127.58K	159,378	Direct
02 Sep, 2026	Mike Mensinger	Chief Product Officer	Disposed S	4,375	$19.11	$83.62K	180,040	Direct
02 Sep, 2026	Sean Saint	President Ceo	Disposed S	16,867	$19.11	$322.38K	404,070	Direct
26 Jun, 2026	Stephen Feider	Chief Financial Officer	Acquired M	5,104	$5.10	$26.03K	171,157	Direct
26 Jun, 2026	Stephen Feider	Chief Financial Officer	Disposed S	5,104	$17.05	$87.01K	166,053	Direct
29 Jun, 2026	Stephen Feider	Chief Financial Officer	Acquired M	4,896	$5.10	$24.97K	170,949	Direct
29 Jun, 2026	Stephen Feider	Chief Financial Officer	Disposed S	4,896	$17.03	$83.38K	166,053	Direct
26 Jun, 2026	Stephen Feider	Chief Financial Officer	Disposed M	5,104	$0.00	$0	44,591	Direct
29 Jun, 2026	Stephen Feider	Chief Financial Officer	Disposed M	4,896	$0.00	$0	39,695	Direct

Showing 1 to 20 of 195 transactions