* Ian McIntosh new CEO after Ramirez Martiarena resigns
* Federico Cerisoli named group CFO (Adds detail and background)
PARIS, Sept 25 (Reuters) - Louis Dreyfus announced on Tuesday the departure of both its chief executive and its finance head, in the latest management shakeup at the agricultural commodity giant.
The group said in a statement that Gonzalo Ramirez Martiarena had resigned as CEO after three years in the post to pursue other opportunities, and would be replaced with immediate effect by Ian McIntosh, previously chief strategy officer.
British national McIntosh has worked for the family-owned group since 1986, Louis Dreyfus said in a statement.
Louis Dreyfus also announced that Federico Cerisoli, previously deputy chief financial officer, will become group CFO after Armand Lumens decided to leave for personal reasons after less than two years in the post.
A spokeswoman for Louis Dreyfus said the departures of Ramirez and Lumens were "unrelated and coincidental."
Dreyfus, the "D" of the so-called 'ABCD' quartet of agricultural commodity giants that also includes Archer Daniels Midland, Bunge and Cargill, has seen a series of management changes in recent years under chairperson and majority shareholder Margarita Louis-Dreyfus.
Those changes have also occured in the midst of a general downturn in agricultural markets.
Several senior traders, led by its former global head of grains, left the group together a year ago and have since joined a trading firm set up by other members of the Louis Dreyfus family.
This year saw McIntosh arrive from former Louis Dreyfus investment fund Edesia as strategy chief, while human resources head Andrea Maserati was promoted to chief operating officer.
In Tuesday's statement, Margarita Louis-Dreyfus said Ramirez Martiarena had "successfully fulfilled his mandate of putting the group in its current solid financial position and creating the conditions for the company's next phase of growth." (Reporting by Gus Trompiz; Editing by Sudip Kar-Gupta)