Pick your SET listing tier and see the exact financial year your first mandatory sustainability report covers, a live countdown to the ~31 March filing deadline, and a count-back plan of what to have done, and when. A real regulatory clock — not a sales gimmick.
Bring your tier and current disclosure. We map the fastest path to a first TSRS-aligned report — bilingual EN/TH, assurance-ready, clause-mapped to your 56-1 One Report.
| Listing tier | First mandatory FY | Report filed by (~31 Mar) | Phase |
|---|
Indicative phased TSRS roadmap (the SEC/SET local adoption of IFRS S1/S2), shown for planning. Dates and tier definitions can change — confirm against the latest SEC/SET notification before you rely on them. Filing target is the ~31 March 56-1 One Report window of the year after the reporting financial year.
The date is fixed; the work is not. Othello builds the baseline, the bilingual editions and the assurance-ready disclosures that turn a deadline into a filed, defensible report — in-house, ISO 17100-aligned, under NDA.