Diffusion Engineers Limited — Regulatory Filings 2025

Dec 25, 2025

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December 25, 2025

To, To, The Manager The Manager Listing Department Corporate Relationship Department National Stock Exchange of India Limited BSE Limited Exchange Plaza, Bandra Kurla Complex Floor 25, Phiroze Jeejeebhoy Towers, Bandra (East), Mumbai - 400 051 Dalal Street, Mumbai - 400 001 NSE Symbol: DIFFNKG BSE Scrip Code - 544264

Sub: Grant of Employee Stock Options under ‘ Diffusion Engineers Limited – Employee Stock Option Scheme 2025’ (“ESOP 2025” or “Scheme”).

Dear Sir / Madam,

Pursuant to Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“Listing Regulations”), we wish to inform you that the Nomination and Remuneration Committee (“NRC”) of the Board of Directors of the Company, through a resolution passed by circulation on December 25, 2025 at 11:08 a.m, has approved the grant of 3,00,000 (Three lakh) Employee Stock Options (“Options”) under the Diffusion Engineers Limited – Employee Stock Option Scheme 2025 (“ESOP 2025” or “Scheme”).

The details required pursuant to Regulation 30 of the Listing Regulations read with SEBI circular SEBI/HO/CFD/PoD2/CIR/P/0155 dated November 11, 2024 (“Master Circular”) are enclosed hereto as Annexure - A .

The aforesaid information will also be available on Company’s website at https://diffusionengineers.com/ .

The same may please be taken on record and suitably disseminated to all concerned.

Thanking you, Yours Sincerely,

For Diffusion Engineers Limited

Chanchal Digitally signed by Chanchal Rajesh Rajesh Jaiswal Jaiswal Date: 2025.12.25 16:42:57 +05'30' Chanchal Jaiswal Company Secretary and Compliance Officer ICSI Membership no. A67136

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Annexure – A

Sr. No.	Particulars	Details
1.	Brief details of options granted	3,00,000 (Three lakh) Employee Stock Options (“Options”) have been granted by the Nomination and Remuneration Committee (“NRC”) in terms of the ‘Diffusion Engineers Limited – Employee Stock Option Scheme2025’(“ESOP 2025”or “Scheme”)
2.	Whether the scheme is in terms of Securities and Exchange Board of India (Share Based Employee Benefits & Sweat Equity) Regulations, 2021	Yes
3.	Total number of shares covered by these options	3,00,000 (Three lakh) Options exercisable into not more than 3,00,000 (Three lakh) equity shares of face value of Rs. 10/-(Rupees Ten Only)each fully paid-up
4.	Pricing formula	The exercise price determined is Rs. 325/- per Option.
5.	Options vested	Not Applicable
6.	Time within which option may be exercised	The Exercise Period for Vested Options shall be a maximum of 4 (Four) years commencing from the date of each Vesting.
7.	Options exercised	Not Applicable
8.	Money realized by exercise of options	Not Applicable
9.	The total number of shares arising as a result of exercise of option	Not Applicable
10.	Options lapsed	Not Applicable
11.	Variation of terms of options	Not Applicable
12.	Brief details of significant terms	The aforesaid options will vest over a period of 4 (four) years from the date ofgrant.
13.	Subsequent changes or cancellation orexercise ofsuchoptions	Not Applicable
14.	Diluted earnings per share pursuant to issue of equity shares on exercise ofoptions	Not Applicable

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