ONGC2026-09-172026-09-17ONGC2026-09-17ONGC2026-09-17

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xbrli:pure

ONGC

Oil & Natural Gas Corporation Limited

500312

NOTLISTED

INE213A01029

true

Listed Entity (self)

true

2026-09-17

11:35:00

13:00:00

2026-09-17

Appointment

Auditors

Cost Auditors

M/s.

Chandra Wadhwa & Co.

2026-09-17

It is a Delhi based firm, established in the year 2001. The Firm is having 1 Head office and 6 Branch offices in different locations across the Country. Firm comprises of 10 competent professionals as partners and 5 other qualified assistants having expertise in their professional field. Sri Chandra Wadhwa, Sr Partner, is the Past President of The Institute of Cost Accountants of India (2007-08) and CCM of The Institute of Chartered Accountants of India (2016-25) Firm has successfully conducted professional assignments for Petroleum Sector and other than Petroleum Sector in PSUs and Private Sectors. Some of them are Oil and Natural Gas Corporation Ltd., Gail India Ltd., Oil India Ltd., Indian Oil Corporation Ltd., Mangalore Refinery & Chemicals Ltd., Nayara Energy Ltd., HPCL-Mittal Energy Ltd., NTPC Ltd., Central Coalfields Ltd., Heavy Engineering Corporation Ltd., SJVN Ltd., National Textile Corporation Ltd., etc. M/s. Chandra Wadhwa & Co., has also conducted Cost Audit of Oil and Natural Gas Corporation Ltd. for the FY 2017-18, 2018-19, FY 2019-20 and FY 2020-21

Appointment

Auditors

Cost Auditors

M/s.

Ramanath Iyer & Co.

2026-09-17

RAMANATH IYER & CO.(RNI) is a leading firm of Cost Accountants operating out of New Delhi since 1978. It was established by Late Shri A.R. Ramanathan, a Fellow Member of the both the Institute of Cost Accountants of India and the Institute of Company Secretaries of India , author of many books on management accounting & cost audit and one of the first members of the erstwhile Company Law Board and Central Regulatory Commission. RNI’s expertise is in the areas of Cost Audit (both Statutory as well as Voluntary) & Cost and Management Accounting. We have been serving various industries both in the manufacturing as well as service sector and belonging to the Private as well as public sector, across India in these areas. Our team comprises of five partners (All Fellow members of the Institute of Cost Accountants of India (ICMAI), expert associates, and a team of 20 cost executives who possess the necessary knowledge, experience & expertise to serve our clients across various industries. We have obtained the peer review certificate in March 2025 from the Peer Review Board of ICMAI. Our Senior partner serves on the board of various committees of the Management accounting bodies both in India & abroad.

Appointment

Auditors

Cost Auditors

M/s.

R Nanabhoy & Co.

2026-09-17

The firm was established in 1948 by Late Shri Ruttonshaw Nanabhoy. We offer a wide spectrum of services in the areas of Cost and Management Accounting. The firm is steered by a dedicated and motivated team of professionals, led by committed partners backed by sound knowledge of international best practice. The team comprises of: Five (5) partners; Eight (8) key team members (average experience in the firm of around 8 years); Seventeen (17) associates. The firm has been Peer reviewed by the Institute of Cost Accountants of India, with no reservation, and the certificate issued on 17th June, 2025 shall remain valid for five years from the date of issue.