# EDGAR Filing Document

**Accession Number:** 0001859690
**File Stem:** 0001104659-25-110321
**Filing Date:** 2025-11
**Character Count:** 15501
**Document Hash:** 9461c0e27d52bebf61b72755faefb14f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-25-110321.hdr.sgml**: 20251112

**ACCESSION NUMBER**: 0001104659-25-110321

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251112

**DATE AS OF CHANGE**: 20251112

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Arqit Quantum Inc.
- **CENTRAL INDEX KEY:** 0001859690
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-PREPACKAGED SOFTWARE [7372]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 0930

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-92850
- **FILM NUMBER:** 251472413

**BUSINESS ADDRESS:**
- **STREET 1:** 3 ORCHARD PLACE
- **CITY:** LONDON
- **STATE:** X0
- **ZIP:** SW1H 0BF
- **BUSINESS PHONE:** 44 203 91 70155

**MAIL ADDRESS:**
- **STREET 1:** 3 ORCHARD PLACE
- **CITY:** LONDON
- **STATE:** X0
- **ZIP:** SW1H 0BF
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Heritage Assets SCSp.
- **CENTRAL INDEX KEY:** 0001882923

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** N4
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**BUSINESS ADDRESS:**
- **STREET 1:** BLD ROYAL 8
- **CITY:** LUXEMBOURG
- **STATE:** N4
- **ZIP:** 2449
- **BUSINESS PHONE:** 377 97 97 63 19

**MAIL ADDRESS:**
- **STREET 1:** C/O HERITAGE SERVICES SAM
- **STREET 2:** 7 RUE DU GABIAN
- **CITY:** MONACO
- **STATE:** O9
- **ZIP:** 98000

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 8)**

**Arqit Quantum Inc.**

*(Name of Issuer)*

**Ordinary Shares, par value $0.0025 per share**

*(Title of Class of Securities)*

**G0567U127**

*(CUSIP Number)*

**Heritage Assets SCSp**<br>c/o Heritage Services SAM<br>7 rue du Gabian<br>Monaco O9 98000<br>377 97 97 63 19

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**11/10/2025**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **G0567U127** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Heritage Assets SCSp** | Name of reporting person<br>**Heritage Assets SCSp** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**N4** | Citizenship or place of organization<br>**N4** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**9272141.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**9272141.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**9272141.00** | Aggregate amount beneficially owned by each reporting person<br>**9272141.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**41.8%** | Percent of class represented by amount in Row (11)<br>**41.8%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** (Rows 8, 10 and 11) On a post-Reverse Stock Split (as defined herein) basis. On September 19, 2024, Arqit Quantum Inc., a Cayman Islands exempted limited liability company ("Arqit"), announced the implementation of a reverse stock split whereby every 25 outstanding ordinary shares of Arqit were consolidated into one ordinary share, par value $0.0025 per share (the "Ordinary Shares") (such consolidation, the "Reverse Stock Split"). The Ordinary Shares began trading on the Nasdaq Capital Market on a post-Reverse Stock Split basis on September 25, 2024. The CUSIP of the Ordinary Shares following the Reverse Stock Split is G0567U127.

| **CUSIP No.** | **G0567U127** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**M Management S.A.** | Name of reporting person<br>**M Management S.A.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**N4** | Citizenship or place of organization<br>**N4** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**9272141.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**9272141.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**9272141.00** | Aggregate amount beneficially owned by each reporting person<br>**9272141.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**41.8%** | Percent of class represented by amount in Row (11)<br>**41.8%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** (Rows 8, 10 and 11) On a post-Reverse Stock Split basis. The Ordinary Shares began trading on the Nasdaq Capital Market on a post-Reverse Stock Split basis on September 25, 2024. The CUSIP of the Ordinary Shares following the Reverse Stock Split is G0567U127.

| **CUSIP No.** | **G0567U127** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Manfredi Lefebvre d'Ovidio** | Name of reporting person<br>**Manfredi Lefebvre d'Ovidio** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**AF** | Source of funds (See Instructions)<br>**AF** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**L6** | Citizenship or place of organization<br>**L6** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**9272141.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**9272141.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**9272141.00** | Aggregate amount beneficially owned by each reporting person<br>**9272141.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**41.8%** | Percent of class represented by amount in Row (11)<br>**41.8%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** (Rows 8, 10 and 11) On a post-Reverse Stock Split basis. The Ordinary Shares began trading on the Nasdaq Capital Market on a post-Reverse Stock Split basis on September 25, 2024. The CUSIP of the Ordinary Shares following the Reverse Stock Split is G0567U127.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Ordinary Shares, par value $0.0025 per share

**(b) Name of Issuer:**
Arqit Quantum Inc.

**(c) Address of Issuer's Principal Executive Offices:**
1st Floor, 3 Orchard Place, London, X0, SW1H 0BF

This Amendment No. 8 to Schedule 13D (this "Amendment No. 8") is being filed by Heritage Assets SCSp, a Luxembourg company, M Management S.A., a Luxembourg company, and Manfredi Lefebvre d'Ovidio (collectively, the "Reporting Persons"), with respect to the Ordinary Shares of Arqit Quantum Inc., a Cayman Islands exempted limited liability company ("Arqit" or the "Issuer"), to amend the Schedule 13D filed by the Reporting Persons on September 14, 2021 (as amended on December 9, 2021, September 15, 2023, October 2, 2024, May 29, 2025, August 26, 2025, September 24, 2025, and October 20, 2025, the "Schedule 13D").

The class of equity security to which this Amendment No. 8 relates is the Ordinary Shares, par value $0.0025 per share, of the Issuer. The address of the principal executive offices of the Issuer is 1st Floor, 3 Orchard Place, London SW1H 0BF, United Kingdom. Information given in response to each item shall be deemed incorporated by reference in all other items, as applicable.

**Item 4. Purpose of Transaction**

Item 4 of the Schedule 13D is amended by adding the following information:

This Amendment No. 8 is being filed to update the aggregate number of Ordinary Shares and percentage of Ordinary Shares of Arqit beneficially owned by the Reporting Persons due to the sale by the Reporting Persons of Business Combination Warrants (as defined in Arqit's Annual Report on Form 20-F for the fiscal year ended September 30, 2024, filed with the Securities and Exchange Commission (the "SEC") on December 5, 2024) and Ordinary Shares at the average prices set forth in the table below, in each case in open market transactions, since the date of the filing of Amendment No. 7 to Schedule 13D by the Reporting Persons, on October 20, 2025 ("Amendment No. 7"). The referenced sale of Ordinary Shares resulted in a decrease of over one percent (1%) in the aggregate percentage ownership reported by the Reporting Persons in Amendment No. 7.

Date of Transaction        Amount of Business        Average Price per
                                   Combination Warrants    Business Combination
                                                                               Warrant ($)
10/16/2025                      2,914                              14.90
10/17//2025                     253                                 14.70
10/21/2025                      438                                 15.30
10/22/2025                      398                                 14.00
10/23/2025                      3,241                              14.50
10/24/2025                      3,620                              17.90
10/27/2025                      1,898                              19.00
10/28/2025                      650                                 18.80
10/29/2025                      133                                 19.00
10/30/2025                      6,070                              14.60
10/31/2025                      305                                 15.00
11/3/2025                        216                                 15.10
11/4/2025                        28                                   15.30
11/5/2025                        145                                 14.40
11/6/2025                        36                                   14.40
11/7/2025                        631                                 11.40
11/10/2025                      647                                 10.80

Date of Transaction       Amount of                Average Price Per
                                     Ordinary Shares       Ordinary Share ($)
11/4/2025                      100,000                            36.86
11/5/2025                      100,000                            34.48
11/10/2025                    100,000                            32.95

**Item 5. Interest in Securities of the Issuer**

**(a)**
The responses of the Reporting Person with respect to Rows 7 through 13 of the respective cover pages of the individual Reporting Persons to this Amendment No. 8 are incorporated herein by reference.

The Reporting Persons' aggregate percentage of beneficial ownership is approximately 41.8% of the outstanding Ordinary Shares. Calculations of the percentage of Ordinary Shares beneficially owned are based on 22,184,708 Ordinary Shares outstanding (including Ordinary Shares that the Reporting Persons have a right to acquire within 60 days) as of September 18, 2025, based on information included in the Issuer's prospectus supplement filed pursuant to Rule 424(b)(3) with the SEC on September 19, 2025.

**(b)**
Except as set forth in this Amendment No. 8, none of the Reporting Persons has engaged in any transaction with respect to the Ordinary Shares since the date of the filing of Amendment No. 7.

**(c)**
Not applicable.

**Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.**

No material changes.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Heritage Assets SCSp

**Signature:** By: M Management S.A., its Sole Manager and General Partner

**Name/Title:** Manfredi Lefebvre d'Ovidio/Director

**Date:** 11/12/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** M Management S.A.

**Signature:** /s/ Manfredi Lefebvre d'Ovidio

**Name/Title:** Manfredi Lefebvre d'Ovidio/Director

**Date:** 11/12/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Manfredi Lefebvre d'Ovidio

**Signature:** /s/ Manfredi Lefebvre d'Ovidio

**Name/Title:** Manfredi Lefebvre d'Ovidio

**Date:** 11/12/2025