Arqit Quantum ARQQ Insider Ownership

NASDAQ ARQQ
$15.31 +1.29 (+9.20%)
At close: Oct 20, 2026 · 4:00 PM EDT

Insider Holdings by Owner

506.82K Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
68.44%
▲+33.48% pp QoQ
Shares Held by Insiders
9.44Mn
filed for Sep 2026
▲+95.80% QoQ
Shares Outstanding
13.79Mn
13,788,250 shares
Direct Holdings
493.78K
Indirect: 8.94Mn
Net Shares Traded (QoQ)
+4.62Mn
net buying in Sep 2026
Insiders Holding Shares
10
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

Over the past year, ARQQ insiders sold $2.84 million of stock (109.57K shares) on the open market and bought none.

Form 4 Holdings

Insiders Holding ARQQ

Insiders 10
Shares held 506.82K
Of outstanding 3.68%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Carlo Calabria Director 233,228 0 233,228 46.0% 07 Oct, 2026
2 Garth Ritchie Director 105,834 0 105,834 20.9% 08 Oct, 2026
3 Andrew Leaver Chief Executive Officer 53,966 0 53,966 10.6% 14 Oct, 2026
4 D'Ovidio Manfredi Lefebvre Director 53,107 0 53,107 10.5% 07 Oct, 2026
5 Paul Feenan Chief Revenue Officer 20,912 0 20,912 4.1% 08 Oct, 2026
6 Nicholas Pointon Chief Financial Officer 16,238 0 16,238 3.2% 22 Apr, 2026
7 Patrick Willcocks General Counsel 11,209 0 11,209 2.2% 08 Oct, 2026
8 Jennifer Bers Chief Revenue Officer 6,712 0 6,712 1.3% 24 Jun, 2026
9 Ben Simon Wilder Chief Operating Officer 4,243 0 4,243 0.8% 08 Oct, 2026
10 Nicholas William Nilan General Manager Us 1,370 0 1,370 0.3% 08 Oct, 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

377 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
13 Oct, 2026 Andrew Leaver Chief Executive Officer Disposed S 2,573 $16.40 $42.21K 53,966 Direct
12 Oct, 2026 Andrew Leaver Chief Executive Officer Acquired M 5,209 $0.00 $0 56,539 Direct
12 Oct, 2026 Andrew Leaver Chief Executive Officer Disposed M 5,209 $0.00 $0 187,500 Direct
06 Oct, 2026 Garth Ritchie Director Disposed S 118 $24.19 $2.85K 105,834 Direct
06 Oct, 2026 Ben Simon Wilder Chief Operating Officer Disposed S 218 $24.19 $5.27K 4,243 Direct
06 Oct, 2026 Nicholas William Nilan General Manager Us Disposed S 493 $24.19 $11.93K 1,370 Direct
06 Oct, 2026 Paul Feenan Chief Revenue Officer Disposed S 504 $24.19 $12.19K 20,912 Direct
06 Oct, 2026 Patrick Willcocks General Counsel Disposed S 555 $24.19 $13.43K 11,209 Direct
06 Oct, 2026 Andrew Leaver Chief Executive Officer Disposed S 2,398 $24.19 $58.01K 51,330 Direct
05 Oct, 2026 Paul Feenan Chief Revenue Officer Acquired M 555 $0.00 $0 21,470 Direct
05 Oct, 2026 Ben Simon Wilder Chief Operating Officer Acquired M 277 $0.00 $0 4,528 Direct
05 Oct, 2026 Patrick Willcocks General Counsel Acquired M 694 $0.00 $0 11,898 Direct
05 Oct, 2026 Carlo Calabria Director Acquired M 16 $0.00 $0 232,996 Direct
05 Oct, 2026 Andrew Leaver Chief Executive Officer Disposed S 2,535 $23.78 $60.29K 56,547 Direct
05 Oct, 2026 Nicholas William Nilan General Manager Us Acquired M 959 $0.00 $0 1,863 Direct
05 Oct, 2026 Garth Ritchie Director Acquired M 16 $0.00 $0 105,847 Direct
05 Oct, 2026 D'Ovidio Manfredi Lefebvre Director Acquired M 1,111 $0.00 $0 52,859 Direct
05 Oct, 2026 Andrew Leaver Chief Executive Officer Disposed J 5,209 $0.00 $0 51,338 Direct
05 Oct, 2026 D'Ovidio Manfredi Lefebvre Director Acquired M 16 $0.00 $0 52,875 Direct
05 Oct, 2026 Patrick Willcocks General Counsel Acquired M 149 $0.00 $0 12,047 Direct