SIGMA ADVANCED SYSTEMS LIMITED — Board/Management Information 2026

Mar 16, 2026

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To,	March 16, 2026	March 16, 2026
BSE Limited	National Stock Exchange of India Limited
Phiroze JeeJee Bhoy Towers	Exchange Plaza
Dalal Street, Fort	Bandra-Kurla Complex, Bandra(E)
Mumbai 400001	Mumbai 400051
Scrip Code:532408	Symbol:SIGMAADV

- Sub: Intimation relating to appointment of Additional Directors (Non Executive, - - Independent) & (Non Executive, Non Independent) under Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015.

Ref: Regulation 30 read with Part A of Schedule III of SEBI (LODR) Regulations, 2015.

Dear Sir/Madam,

In relation to the captioned subject and reference, we wish to inform you that based on recommendation of the Nomination and Remuneration Committee, the Board of Directors of the Company vide Circular Resolution, passed on March 16, 2026 has approved the following:

1. Appointment of Amb. Dr. Venkata Nagendra Prasad Thatipamula (DIN: 11499183) as an Additional Director (Non-Executive, Independent) of the Company with effect from March 16, 2026 for a period of 5 years and to hold office as such up to next / ensuing General Meeting of the Company or up to a period of three months from the date of appointment whichever is earlier.

2. Appointment of Mr. Kartheek Raju Chintalapati (DIN: 02921819) as an Additional Director (Non-Executive, Non-Independent) of the Company of the Company with effect from March 16, 2026 and to hold office as such up to next / ensuing General Meeting of the Company or up to a period of three months from the date of appointment whichever is earlier.

Further, the Board approved the Postal Ballot Notice in relation to the regularization of appointments made above and also with respect to the appointment of Lt Gen Raju Somashekar Baggavalli (DIN: 11482140) who was appointed as an Additional Director earlier on January 16, 2026, as required under Regulation 17(1C) read with other applicable provisions of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 .

In accordance with the circular dated June 20, 2018 issued by the exchanges, it is confirmed that Amb. Dr. Venkata Nagendra Prasad Thatipamula (DIN: 11499183) and Mr. Kartheek Raju Chintalapati (DIN: 02921819) are not debarred from holding the office of Director by virtue of any order of Securities and Exchange Board of India or any such authority.

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Details required to be disclosed under the SEBI Listing Regulations read with Master Circular No. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026 have been provided as Annexure – A.

Kindly take the above information on record.

Thanking you,

For Sigma Advanced Systems Limited (Formerly Megasoft Limited)

THAKUR Digitally signed by THAKUR VISHAL VISHAL SINGH Date: 2026.03.16 SINGH 13:01:56 +05'30'

Thakur Vishal Singh Company Secretary & Compliance Officer

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Annexure – A

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Details as per Master Circular No. HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated January 30, 2026

1. Amb. Dr. Venkata Nagendra Prasad Thatipamula

Sr. No.	Particulars	Details
1.	Name	Amb. Dr. Venkata Nagendra Prasad Thatipamula (DIN: 11499183)
2.	Reason for change	Appointment of Additional Director (Non-Executive, Independent)
3.	Date of appointment	W.e.f. March 16, 2026.
4.	Brief profile	Retired as Ambassador of India (Secretary level in GoI) to Kazakhstan onJune 30, 2025 after over three decades of Indian Foreign Service. Education Born and had done initial schooling in erstwhile Andhra Pradesh and current Telangana State. After a B.Sc in Horticulture he completed M. Sc with ICAR Senior fellowship in 1989. Received two University Gold Medals for both B.Sc and M.Sc. Received an PhD in Horticulture from Indian Agricultural Research Institute in New Delhi. Indian Foreign Service Got into Indian Foreign Service in the year 1993. Served in various positions at Indian Missions inIran, UK, Bhutan, Switzerland, Turkmenistan, USA and Kazakhstan. Was Deputy Ambassador to Bhutan and Switzerland while was Ambassador of India to Turkmenistan and Kazakhstan and Consul General of India at San Francisco. In India, served asRegional Passport Officerof Karnataka inBengaluru(1998-2000) and was the Project Directorof the highly successful e- Governance Project‘Passport Seva Project’(2008-2011). RPO, Bengaluru was adjudged as Best Passport Office and introduced first Passport Kiosk in India. The Passport

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		Seva Project received several awards. He led the project from issue of LoI to TCS to the certification of the project by CERT IN for roll out all over India including managing the Unions, software, setting of Data Centres in Delhi and Chennai, Call centre in Hyderabad, roll out of Pilot centres in Karnataka and Punjab& Haryana etc. As the Head ofGulf Division, coordinated visits of Prime Minister to Saudi Arabia, UAE and Bahrain and Ministerial visits to 6 Gulf countries (2018-2020). Also led the repatriation of Indians in Gulf region during the Covid pandemic through ‘Vande Bharat’. As Consul General in San Francisco, coordinated investments into India in IT, Semi-Conductors and manufacturing. Promoted various States for their products and investment opportunities during all the assignments. Coordinated participation of various states of India and Government of India at Davos Summits for three consecutive years. As an Indian diplomat safe guarded India’s interests and promoted India in political, commercial and cultural fields.
5.	Disclosure of relationships between directors:	Amb. Dr.Venkata Nagendra Prasad Thatipamula (DIN: 11499183) is not related to any of the Directors of the Company.
6.	In accordance with the circular dated June 20, 2018 issued by the exchanges, it is confirmed thatAmb. Dr.Venkata Nagendra Prasad Thatipamula (DIN: 11499183) is not debarred from holding the office of Director by virtue of any order of Securities and Exchange Board of India or any such authority.

2. Mr. Kartheek Raju Chintalapati

Sr. No.	Particulars	Details
1.	Name	Mr. Kartheek Raju Chintalapati (DIN: 02921819)
2.	Reason for change	Additional Director (Non-Executive, Non-Independent)
3.	Date of appointment	W.e.f. March 16, 2026.
4.	Brief profile	Kartheek Raju Chintalapati is a second-generation entrepreneur. At iLabs Group, he led in driving the group’s diversification beyond technology and infrastructure into pharmaceuticals, energy, defence, and electronics manufacturing. He is a savvy team

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		builder with a keen eye for identifying and nurturing high-growth companies. With over 15 years of international experience in consulting and investment, Kartheek has worked extensively across the life sciences, power, and defense sectors. He holds a Bachelor of Business Administration degree from Claremont McKenna College, with a concentration in economics, finance, and accounting. Kartheek began his career as a Business Analyst at McKinsey & Company’s Dubai office, where he focused on corporate strategy engagements for leading global clients. For the past decade, he has lead the iLabs Family Office, spearheading investment strategies in pharmaceuticals, life sciences, defence, manufacturing, and the power sector. His expertise lies in building high performance teams, capital allocation and corporate strategy, with a strong focus on enabling value creation and sustainable growth in high-impact industries.
5.	Disclosure of relationships between directors:	Mr. Kartheek Raju Chintalapati (DIN: 02921819)is not related to any of the Directors of the Company.
6.	In accordance with the circular dated June 20, 2018 issued by the exchanges, it is confirmed thatMr. Kartheek Raju Chintalapati (DIN: 02921819)is not debarred from holding the office of Director by virtue of any order of Securities and Exchange Board of India or any such authority.

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