Q32 Bio QTTB Insider Ownership

NASDAQ QTTB

$8.67 +0.05 (+0.58%)

At close: Oct 21, 2026 · 4:00 PM EDT

Insider Holdings by Owner

1.96Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

5.61%

▲+1.81% pp QoQ

Shares Held by Insiders

1.33Mn

filed for Sep 2026

▲+47.45% QoQ

Shares Outstanding

23.74Mn

23,736,600 shares

Direct Holdings

707.68K

Indirect: 625.00K

Net Shares Traded (QoQ)

+428.89K

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 16, 2026

Over the past 12 months, Q32 Bio insiders bought $15 million of stock on the open market (1.88Mn shares) and sold $505,079 (70.34K shares).

Q32 Bio's open-market purchases in the past 12 months came from one insider, and its sales from 3 insiders.
Among QTTB's insiders, Orbimed Advisors LLC (Director and 10% owner) was the top open-market buyer in the past 12 months, with $15 million of stock purchased (1.88Mn shares) and the latest purchase on May 28, 2026.
On the selling side, Jodie Pope Morrison (CEO) sold the most Q32 Bio stock on the open market over the past 12 months, $312,377 (45.47K shares), most recently on October 6, 2026.
Away from the open market, QTTB insiders received 445.5K shares in stock awards and acquired 53.52K shares through option exercises and conversions over the last 12 months.
Business Quant data shows Q32 Bio insiders holding 1.33Mn shares in total in their latest Form 4 filings.
Of the 1.33Mn shares held by Q32 Bio insiders, 702.24K shares (52.91%) are held directly and 625K shares (47.09%) indirectly, through trusts, partnerships, family members and other entities.
QTTB's insider total is spread across 7 insiders who have filed a Form 4 in the past two years.
QTTB's largest insider holders by reported holdings are Diyong Xu (Director and 10% owner, 625K shares), Jodie Pope Morrison (CEO, 340.04K shares) and Lee Kalowski (CFO and President, 137.17K shares).
Diyong Xu alone accounts for 47.09% of the shares held by Q32 Bio insiders.
Institutions accounted for 93.44% of QTTB's outstanding shares in Q2 2026, insiders about 5.59% per their latest Form 4 filings, and other investors, including the public, about 0.97%.
Over the past 12 months, 12 insiders reported transactions in Q32 Bio stock in 47 Form 4 filings.
These insider figures for Q32 Bio are based on Form 4 filings through October 14, 2026.

Form 4 Holdings

Insiders Holding QTTB

Insiders 16

Shares held 1.96Mn

Of outstanding 8.27%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Advisors Llc Orbimed	Director, TenPercentOwner	0	625,000	625,000	31.8%	01 Jun, 2026
2	Diyong Xu	Director, TenPercentOwner	0	625,000	625,000	31.8%	01 Jun, 2026
3	Jodie Pope Morrison	Ceo	340,038	0	340,038	17.3%	14 Oct, 2026
4	Lee Kalowski	Cfo And President	137,170	0	137,170	7.0%	14 Oct, 2026
5	Shelia M. Violette	Chief Scientific Officer	126,854	0	126,854	6.5%	14 Oct, 2026
6	Isaac Manke	Director	53,521	0	53,521	2.7%	02 Jul, 2026
7	Jason Campagna	Chief Medical Officer	37,500	0	37,500	1.9%	26 Feb, 2025
8	Albert Seymour	Chief Scientific Officer	8,383	0	8,383	0.4%	08 Sep, 2023
9	Arthur Tzianabos	President Ceo	7,155	0	7,155	0.4%	15 Feb, 2024
10	W Bradford Smith	Cfo Treasurer	790	0	790	0.0%	11 Jan, 2023
11	Michael Lee Blum	Chief Commercial Officer	752	0	752	0.0%	11 Jan, 2023
12	Julie Jordan	Chief Medical Officer	416	0	416	0.0%	07 Aug, 2023
13	Gabriel Cohn	Chief Medical Officer	146	0	146	0.0%	12 Jan, 2022
14	Paul Alloway	Officer	144	0	144	0.0%	23 Apr, 2024
15	Timothy P Kelly	Chief Operating Officer	124	0	124	0.0%	12 Jan, 2022
16	Charles Jr Michaud	Officer	52	0	52	0.0%	23 Apr, 2024

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

486 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
06 Oct, 2026	Jodie Pope Morrison	Ceo	Disposed S	3,221	$8.32	$26.80K	340,038	Direct
06 Oct, 2026	Shelia M. Violette	Chief Scientific Officer	Disposed S	917	$8.32	$7.63K	126,854	Direct
06 Oct, 2026	Lee Kalowski	Cfo And President	Disposed S	1,301	$8.32	$10.82K	137,170	Direct
25 Aug, 2026	Jodie Pope Morrison	Ceo	Disposed S	9,845	$16.56	$163.03K	343,259	Direct
25 Aug, 2026	Shelia M. Violette	Chief Scientific Officer	Disposed S	2,798	$16.56	$46.33K	127,771	Direct
25 Aug, 2026	Lee Kalowski	Cfo And President	Disposed S	3,972	$16.56	$65.78K	138,471	Direct
12 Jun, 2026	Isaac Manke	Director	Acquired A	10,826	$0.00	$0	10,826	Direct
12 Jun, 2026	Diyong Xu	Director, TenPercentOwner	Acquired A	10,826	$0.00	$0	10,826	Direct
12 Jun, 2026	Kathleen Laporte	Director	Acquired A	10,826	$0.00	$0	10,826	Direct
12 Jun, 2026	David S. Grayzel	Director	Acquired A	10,826	$0.00	$0	10,826	Direct
12 Jun, 2026	Sven Ante Lundberg	Director	Acquired A	10,826	$0.00	$0	10,826	Direct
12 Jun, 2026	Mark T Iwicki	Director	Acquired A	10,826	$0.00	$0	10,826	Direct
12 Jun, 2026	Arthur Tzianabos	Director	Acquired A	10,826	$0.00	$0	10,826	Direct
12 Jun, 2026	Mary Thistle	Director	Acquired A	10,826	$0.00	$0	10,826	Direct
16 Jul, 2026	Shelia M. Violette	Chief Scientific Officer	Acquired A	37,500	$0.00	$0	130,569	Direct
16 Jul, 2026	Jodie Pope Morrison	Ceo	Acquired A	132,000	$0.00	$0	353,104	Direct
16 Jul, 2026	Lee Kalowski	Cfo And President	Acquired A	53,250	$0.00	$0	142,443	Direct
30 Jun, 2026	Isaac Manke	Director	Acquired M	53,521	$2.80	$149.86K	53,521	Direct
30 Jun, 2026	Isaac Manke	Director	Disposed M	53,521	$0.00	$0	0	Direct
12 Jun, 2026	Kathleen Laporte	Director	Acquired A	9,810	$0.00	$0	9,810	Direct

Showing 1 to 20 of 486 transactions