Pb*

We present a study of the Fermi surface of the putative triple point topological semimetal Pd₃Pb carried out by measuring Shubnikov-de Haas (SdH) oscillations in fields of up to 60 T. A multi-sheet Fermi surface has been reconstructed from the oscillation data and is largely in agreement with DFT calculations, albeit with a Fermi level shifted slightly (~30 meV) by small electron doping. A Berry-phase analysis of the SdH oscillations reveals a non-trivial phase for two bands along high symmetry directions, confirming the topological nature of Pd₃Pb. Importantly, the phase of the oscillation shows an angular dependence with respect to the direction of the applied magnetic field. With the signature of a topological phase transition to a trivial phase, this angular dependence may signify a unique identity of the evolution of triple point fermionic states under field.