CSB Bank has announced the closure of its trading window for designated persons and connected persons starting October 1, 2026. This restriction remains in effect until the end of two clear trading days following the declaration of the bank's unaudited financial results for the quarter and half year ending September 30, 2026.

Regulatory compliance and timeline

The closure is implemented pursuant to the bank's Code of Conduct for Prohibition of Insider Trading, which aligns with the Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015. The measure aims to prevent insider trading during the sensitive period leading up to the release of quarterly performance data.

The trading window will remain closed for:

• Designated persons as defined under the Code of Conduct
• Immediate relatives of designated persons
• Connected persons associated with the bank

The exact date of the Board Meeting to consider and approve these results has not yet been finalized. The bank stated that this date will be intimated to the exchanges in due course.

Procedural details

The intimation was filed with BSE Limited and National Stock Exchange of India Ltd on September 22, 2026. The notice confirms that the restriction applies specifically to dealing in equity shares of the bank during the specified period. Once the results are declared, the trading window will reopen after two clear trading days, allowing eligible participants to resume transactions in accordance with regulatory norms.

CSB Bank has received Reserve Bank of India approval for ICICI Prudential Asset Management Company to acquire up to 9.95% stake in the lender. The clearance was conveyed via letter dated September 8, 2026.

Regulatory approval details

The RBI's approval allows ICICI Prudential AMC to hold an aggregate holding of up to 9.95% of the paid-up share capital or voting rights in CSB Bank. This regulatory clearance represents a notable development for the bank, as it opens the door for a significant institutional stake acquisition by one of India's prominent asset management companies.

The approval from the RBI is a mandatory regulatory requirement for any entity seeking to acquire a significant stake in a scheduled commercial bank in India. ICICI Prudential AMC's interest in acquiring up to 9.95% of CSB Bank underscores institutional confidence in the lender.

Compliance conditions

The intimation, issued pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, states that the approval is subject to compliance with specific statutory frameworks. These include the Banking Regulation Act, 1949, and the RBI (Commercial Banks – Acquisition and Holding of Shares or Voting Rights) Directions, 2025, dated November 28, 2025.

Additionally, the acquisition must adhere to the Foreign Exchange Management Act, 1999, SEBI regulations, and any other applicable statutes, regulations, and guidelines. The company secretary, Sijo Varghese, confirmed that this intimation is also available on the bank's website.