These are Singapore companies which announced share buybacks on Friday 1 February 2019:
Keppel REIT
Keppel REIT bought back 1.5 million units in the market at S$1.18 each for a total consideration, including other costs, of S$1.77 million, it said in a filing to SGX after the market close on Friday.
All of the units bought back will be canceled, the filing said.