LONDON/FRANKFURT, May 28 (Reuters) - Uber ( UBER ) has

raised its stake in Germany's Delivery Hero to nearly

37% from 25% after buying a stake from fellow shareholder Aspex

Management, according to regulatory filings and two people close

to the matter.

The deal with Aspex comes as Uber ( UBER ) is working on a new bid to

take over the German food delivery company following an

indicative €33-per-share ($38.29) proposal on Saturday, two

separate sources said on Thursday, speaking on condition of

anonymity because the talks are private.

Delivery Hero declined to comment.

Uber ( UBER ) did not immediately respond to a request for comment.

Shares in Delivery Hero fell 3.6% to €37.93 per share by

0751 GMT.

Uber ( UBER ) now holds a total of 36.83% in Delivery Hero - 24.99%

in common shares and the rest linked to derivative instruments -

compared with 25.1% previously, the filings in Germany published

late on Wednesday show.

A separate regulatory filing showed Aspex has almost halved

its stake to 7.56% from 14.55%, while the remaining stake will

be transferred at a later date.

Delivery Hero confirmed on Saturday it had received an

indicative proposal from Uber ( UBER ) valuing the company at €33 per

share. The German group's CEO Niklas Oestberg said last week he

would step down, following campaigns by several large

shareholders for a strategic review.

The FT had reported that Uber's ( UBER ) board met on Saturday to

discuss raising its offer after its initial approach was

rebuffed.

(Reporting by Amy-Jo Crowley and Christoph Steitz; Additional

reporting by Echo Wang and Samuel Indyk; Editing by Kirsten

Donovan, Anousha Sakoui and Emelia Sithole-Matarise)