Bred and originally owned by the Aga Khan she was unraced as a two-year-old and won one minor race as a three-year-old in 2011 before being sold at auction.
[6] On her first appearance as a four-year-old, Siyouma contested a minor stakes race over 2000 metres at Compiègne on 12 March and won "easing down" by two lengths from the seven-year-old gelding Le Roi Mage.
[7] Two weeks later she finished third to Pagera and Haya Landa in the Prix Banassa at Saint-Cloud Racecourse and on April 27 she ran fourth behind Aiavoski in the Listed Vase d'Argent at Toulouse.
Ridden by Thierry Jarnet she stayed on strongly in the straight to take third place, beaten a nose and three quarters of a length by Solemia and Shareta.
Starting at odds of 33/1 she was restrained by Mosse in the early stages before staying on to take third behind Giofra and Elusive Kate with the unplaced horses including Maybe and Golden Lilac.
On her return to France in August she finished fifth behind Snow Fairy, Izzi Top, Galikova and Timepiece in the Prix Jean Romanet although she was later promoted to fourth when the "winner" tested positive for a banned substance.
Siyouma took the lead a furlong out and held off a challenge from Elusive Kate to win by three quarters of a length with Laugh Out Loud holding on to take third ahead of La Collina.
After racing in mid-division, Siyouma was switched to the outside, took the lead a furlong and a half from the finish and won in "impressive" style by one and three quarter lengths and a neck from Pagera and Dream Peace.