Kwong Siu-hing, the 84-year-old matriarch who controls Sun Hung Kai Properties (SHKP), has confirmed that she has transferred shares worth an estimated HK$33 billion to the families of two sons, who are co-chairmen of the HK$260 billion business empire. She added that she had not given any shares to eldest son Walter Kwok Ping-sheung, who was ousted as chairman of the company in 2008 after a boardroom fight with his two younger brothers, who subsequently took over as co-chairmen of the city's second largest developer. A statement issued yesterday by a trust controlled by Kwong said that on Friday she transferred 6.36 per cent of SHKP shares to a separate trust owned by Thomas Kwok Ping-kwong and his family and an equivalent amount of shares to another trust owned by Raymond Kwok Ping-luen and his family. The combined 12.72 per cent stake, or 337.76 million shares, offloaded by Kwong is worth HK$33.1 billion at yesterday's closing price of HK$98. The company had reported the share transfer from Kwong's trust in a filing to the stock exchange on Tuesday but had not specified the beneficiaries. The statement on behalf of Kwong issued by the trust - which owns about 43 per cent of SHKP - said the latest transfer was on the lines of the terms of reorganisation of the trust in October 2010. Under that reorganisation, a third of the trust is owned by "Walter Kwok's family", not "Walter Kwok and his family", as was the case before, meaning that Walter Kwok ceased to be a beneficiary. Thomas and Raymond Kwok each own a third of the trust along with their families. Kwong reiterated the shareholding under "Walter Kwok's family" still remained unchanged, at one-third of the trust. But people familiar with the Kwok family said the families of Thomas and Raymond Kwok each now owns 6.36 per cent of the company shares, worth HK$16.55 billion. They had previously co-owned the stake with Kwong. Kwong, who has reduced her stake in SHKP from 43 per cent to 30.79 per cent, remains the largest shareholder in the empire founded by her late husband, Kwok Tak-seng. Walter Kwok was unavailable for comment.