The hippocampal CA1 region continually receives a large array of intra and extra-hippocampal inputs. Local GABA-ergic interneurons in the strata radiatum and lacunosum-moleculare are thought to play a key role in structuring this incoming information. However, little is known about the in vivo electrophysiological characteristics of these superficial interneurons during behaviour. Here, we present ongoing work describing the firing properties of interneurons recorded in the stratum radiatum and lacunosum-moleculare in relation to pyramidal neuron activity and network oscillations in freely moving mice. To do so, we first developed and validated an LFP-based approach to perform CA1 layer-specific tetrode recordings. We leveraged this approach to record over ~400 interneurons across the strata radiatum, lacunosum, and moleculare alongside ~1200 pyramidal neurons. We found that superficial interneurons display distinct activity profiles with respect to theta phase and sharp-wave ripples across different layers. Furthermore, preliminary data suggests that EC and CA3 differentially targeted superficial interneurons across the radial axis which suggests independent inhibitory control across these segregated inputs. Overall, this in vivo dataset provides the opportunity to gain novel insights into the function of superficial interneurons in hippocampal information processing.