Lock-in calendar · Sumax Engineering Limited IPO
Sumax Engineering Limited — Lock-in Expiry Dates
Listed 02 Sept 2026 · SUMAX · updated 19 Sept 2026, 1:30 am IST
Next unlock
30 Sept 2026
Days away
11
Who
Anchor investors (first half)
Remaining tranches
5
These dates are approximate. We do
not hold a confirmed allotment date for this issue, so they are counted from two
working days before listing — the usual gap, but not a certainty. The offer
document is the authority.
| Holder | Unlocks | Away | What it is |
|---|---|---|---|
| Anchor investors (first half) | 30 Sept 2026 | 11d | Half of every anchor allocation unlocks 30 days after allotment. This is usually the first tranche of any size to become sellable. |
| Anchor investors (second half) | 29 Nov 2026 | 71d | The remaining anchor holding. The 30/90 split was introduced in 2021 — before that the whole anchor book unlocked at once. |
| Pre-IPO shareholders (non-promoter) | 27 Feb 2027 | 161d | Existing non-promoter shareholders — early investors, ESOP holders, institutions who bought before the issue. Often the largest single pool. |
| Promoter holding above minimum contribution | 27 Feb 2027 | 161d | Whatever promoters hold beyond the 20% minimum contribution. |
| Promoter minimum contribution (20%) | 29 Feb 2028 | 528d | The 20% of post-issue capital promoters must retain. Reduced from three years to eighteen months in 2022. |
A date, not a prediction. An expiry means
these shares become sellable. Whether anyone sells is a separate question, and
one we do not answer.
Derived from SEBI ICDR lock-in periods and this issue's estimated allotment date. See how the periods work.