Based on the latest exchange and company filings available as of 12 May 2026, Sigma Advanced Systems Limited (NSE: SIGMAADV / BSE: 532408) is not currently undertaking any preferential issue of shares or warrants to investors to raise funds.

Key recent actions instead have been:

- Board / governance items via postal ballot – postal ballots in Feb–Apr 2026 have been only for appointment/re‑designation/regularisation of directors (Lt Gen Raju S. Baggavalli, Amb. Dr. V. N. P. Thatipamula, Mr. Kartheek Raju Chintalapati, etc.). No resolution for preferential allotment or other equity issue is included in these notices/results. (scanx.trade)

- Capital infusion via amalgamation (Jan 2026) – increase in equity capital and promoter shareholding happened through a scheme of amalgamation, not a preferential issue. (scanx.trade)

- Cash inflow from asset sale (Mar 2026) – sale of 36.52% stake in Extrovis AG to Refex Life Sciences for USD 15 million (~₹138 crore), again a sale of investment, not an equity raise from investors. (screener.in)

Historical records do show old preferential issues (e.g., early 2000s when it was Megasoft), but there is no current or recently announced preferential issue in FY25–26. (economictimes.indiatimes.com)

For the latest status, the most reliable places to monitor are:

- NSE corporate announcements page for SIGMAADV (Corporate Filings → Company Announcements) (nseindia.com)

- BSE / company notices as aggregated on Moneycontrol’s notice page for Sigma Advanced Systems (moneycontrol.com)

- The company’s own investor relations section: `sigmaadvsys.com → Investors → Announcements / Postal Ballot` (sigmaadvsys.com)

As of the information above, there is no preferential issue open to investors.

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