[1][2][3] As Kapitein, he headed the local Chinese civil administration in Tangerang and Meester Cornelis as part of the Dutch colonial system of 'indirect rule'.

[7] In the lead-up to the establishment of the influential Confucian organisation Tiong Hoa Hwee Koan (THHK) in 1900, Kapitein Oey Giok Koen was offered the presidency of the new society by its founders.

[1] In February 1893, Kapitein Oey Giok Koen expanded his landholdings by purchasing the particuliere landen of Tigaraksa and Pondok Kosambi from his brother-in-law, Ong Hok Tiang.

[10] Despite coming from a Peranakan lineage of long standing in the Indies, Oey also maintained interests in his ancestral China, where he was appointed in 1908, for instance, as director of the Fukien Railway Company in Amoy, Fujian.

[12][13][3][6] Kapitein Oey Giok Koen's descendants through his two sons remain to his day among Indonesia's oldest and wealthiest families as owners of two related, Indonesian conglomerates, Tigaraksa Satria, Tbk and Sintesa Group.