Studying rock physics and interfacial properties of kerogen remains an area of active research. Kerogen is often considered as hydrocarbon-wet in reservoir characterization. Despite this, wettability of kerogen is not fully understood and quantified. Assumptions made about the wettability of kerogen affects interpretation of borehole geophysical measurements such as electromagnetic measurements. It is therefore important to quantify wettability of kerogen as a function of relevant factors. For instance, the chemical structure and composition can vary as a function of kerogen type, which affects its surface properties such as wettability. In addition, processes such as thermal maturation induce changes in the chemical composition and structure. Thermal maturation decreases oxygen and hydrogen content and increases aromaticity. Oxygen containing function groups are also altered during thermal maturity. Moreover, changes in temperature and pressure also alter surface properties and affect the wettability of kerogen. However, the impact of different functional groups present in kerogen and reservoir temperature and pressure on kerogen wettability are yet to be quantified through a fundamental study.