Securities and Board Exchange of India (SEBI) did not specify which disclosures Unilever had issued late. Under Indian rules, companies are required to make certain statements when they are involved in takeovers.
The Anglo-Dutch consumer goods company had acquired a little over two-thirds of its Indian unit last year for about 2.45 billion euros.
A Hindustan Unilever official was not immediately reachable for comment. SEBI said on Friday Unilever had admitted to the omissions in disclosures but had said the delays were inadvertent in nature.