SingTel has shortlisted JWT, Ogilvy, TBWA and Leo Burnett, sources close to the pitch told Campaign Asia-Pacific.
The SingTel team will hold chemistry workshops with the shortlisted agencies this week, according to one source.
The final pitch presentation is expected to take place in the mid September, during the week of the Spikes Asia Festival.
In June, SingTel called the integrated pitch, which is seen as the pitch of the year by the local industry, aiming to appoint one agency for both creative and digital duties.
Earlier this month, BBDO Singapore pulled out of the pitch despite its five-year relationship as the creative agency for the telecom company.