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REGISTERED NUMBER: 15065672 (England and Wales)

FINANCIAL STATEMENTS FOR THE YEAR ENDED 31 DECEMBER 2025

FOR

PLASMIDSAURUS LTD

| PLASMIDSAURUS LTD (REGISTERED NUMBER: 15065672) |

CONTENTS OF THE FINANCIAL STATEMENTS

FOR THE YEAR ENDED 31 DECEMBER 2025

Page |

| Company information | 1 |

| Balance sheet | 2 |

| Notes to the financial statements | 3 |

| PLASMIDSAURUS LTD |

COMPANY INFORMATION

FOR THE YEAR ENDED 31 DECEMBER 2025

| Directors: | E A Johnson

| C Ko

| Registered office: | Suite 2, Ground Floor

| Templeback

| 10 Temple Back

| Bristol

| BS1 6FL

| Registered number: | 15065672 (England and Wales)

| Auditors: | Hayvenhursts Limited

| Fairway House

| Links Business Park

| St Mellons

| Cardiff

| CF3 0LT

| PLASMIDSAURUS LTD (REGISTERED NUMBER: 15065672) |

BALANCE SHEET

31 DECEMBER 2025

2025 | 2024 |

| Notes | £ | £

FIXED ASSETS

Tangible assets | 4 | 352,128 |  | 49,496 |  |

CURRENT ASSETS

Debtors | 5 | 135,641 |  | 32,248 |  |

Cash at bank | 17,650 |  | 65,158 |  |

153,291 |  | 97,406 |  |

CREDITORS

Amounts falling due within one year | 6 | (339,989 | ) | (83,972 | ) |

NET CURRENT (LIABILITIES)/ASSETS | (186,698 | ) | 13,434 |  |

TOTAL ASSETS LESS CURRENT LIABILITIES | 165,430 |  | 62,930 |  |

PROVISIONS FOR LIABILITIES | (25,053 | ) | - |  |

NET ASSETS | 140,377 |  | 62,930 |  |

CAPITAL AND RESERVES

Called up share capital | 100 |  | 100 |  |

Share based payment reserves | 1,885 |  | - |  |

Retained earnings | 138,392 |  | 62,830 |  |

140,377 |  | 62,930 |  |

The financial statements have been prepared and delivered in accordance with the provisions applicable to companies subject to the small companies regime.

In accordance with Section 444 of the Companies Act 2006, the Income statement has not been delivered.

The financial statements were approved by the Board of Directors and authorised for issue on 26 June 2026 and were signed on its behalf by:

E A Johnson - Director

| PLASMIDSAURUS LTD (REGISTERED NUMBER: 15065672) |

NOTES TO THE FINANCIAL STATEMENTS

FOR THE YEAR ENDED 31 DECEMBER 2025

1. | STATUTORY INFORMATION

| Plasmidsaurus Ltd is a private company, limited by shares, registered in England and Wales. The company's registered number and registered office address can be found on the Company Information page.

| The company's functional and presentational currency is pounds sterling (GBP) and the financial statements have been rounded to the nearest pound (£).

2. | ACCOUNTING POLICIES

| Basis of preparing the financial statements

| These financial statements have been prepared in accordance with Financial Reporting Standard 102 "The Financial Reporting Standard applicable in the UK and Republic of Ireland" including the provisions of Section 1A "Small Entities" and the Companies Act 2006. The financial statements have been prepared under the historical cost convention.

| Related party exemption

| The company has taken advantage of exemption, under the terms of Financial Reporting Standard 102 'The Financial Reporting Standard applicable in the UK and Republic of Ireland', not to disclose related party transactions with wholly owned subsidiaries within the group.

| Turnover

| Turnover represents amounts charged to the company's parent under a sales and marketing agreement, excluding value added tax. Turnover is recognised when chargeable costs are incurred.

| Tangible fixed assets

| Tangible fixed assets held for the company's own use are stated at cost less accumulated depreciation and accumulated impairment losses.

| Depreciation is provided at the following annual rates on a straight-line basis in order to write off each asset over its estimated useful life.

| Plant and machinery - 20% on cost (over 5 years)

| Leased property improvement - over 5 years

| Financial instruments

| The company has elected to apply the provisions of Section 11 'Basic Financial Instruments' and Section 12 'Other Financial Instruments Issues' of FRS102 to all of its financial instruments.

| Financial instruments are recognised in the company's balance sheet when the company becomes party to the contractual provisions of the instrument.

| Financial assets and liabilities are offset, with the net amounts presented in the financial statements, when there is a legally enforceable right to set off the recognised amounts and there is an intention to settle on a net basis or to realise the asset and settle the liability simultaneously.

| Classification of financial liabilities

| Financial liabilities and equity instruments are classified according to the substance of the contractual arrangements entered into.

| Basic financial liabilities

| Basic financial liabilities, including creditors, and loans from fellow group companies are initially recognised at transaction price.

| Taxation

| Taxation for the year comprises current and deferred tax. Tax is recognised in the Income Statement, except to the extent that it relates to items recognised in other comprehensive income or directly in equity.

| Current or deferred taxation assets and liabilities are not discounted.

| Current tax is recognised at the amount of tax payable using the tax rates and laws that have been enacted or substantively enacted by the balance sheet date.

| PLASMIDSAURUS LTD (REGISTERED NUMBER: 15065672) |

NOTES TO THE FINANCIAL STATEMENTS - continued

FOR THE YEAR ENDED 31 DECEMBER 2025

2. | ACCOUNTING POLICIES - continued

| Foreign currencies

| Assets and liabilities in foreign currencies are translated into sterling at the rates of exchange ruling at the balance sheet date. Transactions in foreign currencies are translated into sterling at the rate of exchange ruling at the date of transaction. Exchange differences are taken into account in arriving at the operating result.

| Pension costs and other post-retirement benefits

| The company operates a defined contribution pension scheme. Contributions payable to the company's pension scheme are charged to profit or loss in the period to which they relate.

| Share based payments

| Where share options are awarded to employees, the fair value of the options at the date of grant is charged to profit or loss over the vesting period. Non-market vesting conditions are taken into account by adjusting the number of equity instruments expected to vest at each balance sheet date so that, ultimately, the cumulative amount recognised over the vesting period is based on the number of options that eventually vest. Market vesting conditions are factored into the fair value of the options granted. The cumulative expense is not adjusted for failure to achieve a market vesting condition.

| The fair value of the award also takes into account non-vesting conditions. These are either factors beyond the control of either party (such as a target based on an index) or factors which are within the control of one or other of the parties (such as the Company keeping the scheme open or the employee maintaining any contributions required by the scheme).

| Where the terms and conditions of options are modified before they vest, the increase in the fair value of the options, measured immediately before and after the modification, is also charged to profit or loss over the remaining vesting period.

| Where equity instruments are granted to persons other than employees, profit or loss is charged with fair value of goods and services received.

3. | EMPLOYEES AND DIRECTORS

| The average number of employees during the year was 7 (2024 - 6 ) .

4. | TANGIBLE FIXED ASSETS

Leased |

property | Plant and |

improvement | machinery | Totals |

| £ | £ | £

| Cost

| At 1 January 2025 | - |  | 67,494 |  | 67,494 |  |

| Additions | 255,133 |  | 70,231 |  | 325,364 |  |

| At 31 December 2025 | 255,133 |  | 137,725 |  | 392,858 |  |

| Depreciation

| At 1 January 2025 | - |  | 17,998 |  | 17,998 |  |

| Charge for year | 7,087 |  | 15,645 |  | 22,732 |  |

| At 31 December 2025 | 7,087 |  | 33,643 |  | 40,730 |  |

| Net book value

| At 31 December 2025 | 248,046 |  | 104,082 |  | 352,128 |  |

| At 31 December 2024 | - |  | 49,496 |  | 49,496 |  |

5. | DEBTORS: AMOUNTS FALLING DUE WITHIN ONE YEAR |

2025 | 2024 |

| £ | £

| Other debtors | 135,641 |  | 32,248 |  |

| PLASMIDSAURUS LTD (REGISTERED NUMBER: 15065672) |

NOTES TO THE FINANCIAL STATEMENTS - continued

FOR THE YEAR ENDED 31 DECEMBER 2025

6. | CREDITORS: AMOUNTS FALLING DUE WITHIN ONE YEAR |

2025 | 2024 |

| £ | £

| Amounts owed to group undertakings | 228,828 |  | 31,024 |  |

| Taxation and social security | 18,941 |  | 4,604 |  |

| Other creditors | 92,220 |  | 48,344 |  |

339,989 |  | 83,972 |  |

7. | LEASING AGREEMENTS

| Minimum lease payments under non-cancellable operating leases fall due as follows:

2025 | 2024 |

| £ | £

| Within one year | 223,920 |  | 43,116 |  |

| Between one and five years | 895,680 |  | - |  |

1,119,600 |  | 43,116 |  |

8. | DISCLOSURE UNDER SECTION 444(5B) OF THE COMPANIES ACT 2006

| The Report of the auditors was unqualified.

| Gareth Williams (Senior Statutory Auditor)

| for and on behalf of Hayvenhursts Limited

9. | ULTIMATE CONTROLLING PARTY

| Primordium Labs Inc. is the company's immediate and ultimate parent company, with the registered office at 288 E. Live Oak Ave., Suite A250, Arcadia, California 91006, USA.

| The largest and smallest group in which the results of the company are consolidated is that headed by Primordium Labs Inc. with its principal place of business at 427 E Huntington Dr, Monrovia, California 91016, USA.