Arqit Quantum ARQQ Insider Ownership

NASDAQ ARQQ
$24.12 -0.52 (-2.11%)
At close: Sep 29, 2026 · 4:00 PM EDT

Insider Holdings by Owner

9.39Mn 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
9
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

Quarter ending 30 Sep, 2026

ARQQ's three largest insider shareholders as of September 29, 2026 are D'Ovidio Manfredi Lefebvre (Director, 8.94Mn shares), Carlo Calabria (Director, 232.48K shares), Garth Ritchie (Director, 105.45K shares).

Form 4 Holdings

Insiders Holding ARQQ

Insiders 9
Shares held 9.39Mn
Of outstanding 68.08%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 D'Ovidio Manfredi Lefebvre Director 0 8,942,448 8,942,448 95.3% 23 Sep, 2026
2 Carlo Calabria Director 232,478 0 232,478 2.5% 21 Jul, 2026
3 Garth Ritchie Director 105,450 0 105,450 1.1% 21 Jul, 2026
4 Andrew Leaver Chief Executive Officer 51,483 0 51,483 0.5% 06 Jul, 2026
5 Paul Feenan Chief Revenue Officer 19,351 0 19,351 0.2% 06 Jul, 2026
6 Nicholas Pointon Chief Financial Officer 16,238 0 16,238 0.2% 22 Apr, 2026
7 Patrick Willcocks General Counsel 9,462 0 9,462 0.1% 06 Jul, 2026
8 Jennifer Bers Chief Revenue Officer 6,712 0 6,712 0.1% 24 Jun, 2026
9 Ben Simon Wilder Chief Operating Officer 3,582 0 3,582 0.0% 06 Jul, 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

207 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
22 Sep, 2026 D'Ovidio Manfredi Lefebvre Director Acquired X 4,600,000 $2.50 $11.50Mn 8,942,448 Indirect
22 Sep, 2026 D'Ovidio Manfredi Lefebvre Director Disposed X 4,600,000 $0.00 $0 0 Indirect
17 Jul, 2026 Garth Ritchie Director Acquired M 841 $0.00 $0 105,450 Direct
17 Jul, 2026 D'Ovidio Manfredi Lefebvre Director Acquired M 673 $0.00 $0 49,023 Direct
17 Jul, 2026 Carlo Calabria Director Acquired M 757 $0.00 $0 232,478 Direct
17 Jul, 2026 Garth Ritchie Director Disposed M 841 $0.00 $0 0 Direct
17 Jul, 2026 Carlo Calabria Director Disposed M 757 $0.00 $0 0 Direct
17 Jul, 2026 D'Ovidio Manfredi Lefebvre Director Disposed M 673 $0.00 $0 0 Direct
15 Jul, 2026 D'Ovidio Manfredi Lefebvre Director Acquired A 673 $0.00 $0 673 Direct
15 Jul, 2026 Carlo Calabria Director Acquired A 757 $0.00 $0 757 Direct
15 Jul, 2026 Garth Ritchie Director Acquired A 841 $0.00 $0 841 Direct
09 Jul, 2026 D'Ovidio Manfredi Lefebvre Director Disposed S 404 $1.19 $481 14,105 Indirect
10 Jul, 2026 D'Ovidio Manfredi Lefebvre Director Disposed S 8 $1.19 $10 14,097 Indirect
07 Jul, 2026 D'Ovidio Manfredi Lefebvre Director Disposed S 40 $1.17 $47 14,619 Indirect
08 Jul, 2026 D'Ovidio Manfredi Lefebvre Director Disposed S 110 $1.40 $154 14,509 Indirect
02 Jul, 2026 D'Ovidio Manfredi Lefebvre Director Disposed S 36 $1.40 $50 14,756 Indirect
06 Jul, 2026 D'Ovidio Manfredi Lefebvre Director Disposed S 97 $1.20 $116 14,659 Indirect
01 Jul, 2026 D'Ovidio Manfredi Lefebvre Director Acquired M 3,584 $0.00 $0 47,801 Direct
01 Jul, 2026 Garth Ritchie Director Acquired M 50 $0.00 $0 104,299 Direct
01 Jul, 2026 Carlo Calabria Director Acquired M 50 $0.00 $0 230,972 Direct