The club's net debt also remained unchanged at £2.8m.
Petrie said the cause for the operating loss was the effect of increased spending on wages and a fall in revenues - due largely to early exits from both domestic cup competitions and finishing sixth in the Scottish Premier League.
And, despite predicting tight financial times ahead, the chairman is optimistic the club is in safe hands.
"The general economic climate has changed very much in a short space of time and football clubs are not immune to it," Petrie told Hibs' website.
"The club is on a rock solid financial footing as we work towards restoring an operational break-even position in the year ahead."
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