Ostrom is a thoroughbred horse born in Australia in 2022. Race horse Ostrom is by Capitalist (AUS) out of Siwa Lady (AUS) , trained by Ben, Will & Jd Hayes. Ostrom form is available here. Owned by Gaire Pty Ltd (D J Molloy), Mrs E C Mortensen, B J Molloy, D J Molloy, Mrs A Molloy, M Skinner, Mrs S A Skinner, Ms S E Watkins, J Gray, Mrs K Gray, D Murphy, Ms B Nepean, D R Dickinson & Mrs P E Dickinson.