Fill a large pot with water, bring it to a boil, and add the lobsters. Boil for about 8-10 minutes, then remove and let them cool. After cooling, crack the shells, and extract the meat; chop into bite-sized pieces and set aside.
In a separate saucepan, heat the seafood stock over low heat and keep it warm.
In a large saucepan, heat the olive oil and 1 tablespoon of butter over medium heat. Add the chopped onion and cook until soft and translucent, about 5 minutes.
Stir in the minced garlic and Arborio rice. Cook for an additional 2-3 minutes, stirring frequently until the rice is lightly toasted.
Pour in the white wine and let it simmer, stirring constantly until the wine is mostly absorbed by the rice.
Begin adding the warm seafood stock, one ladleful at a time, stirring continuously. Wait until the liquid is almost fully absorbed before adding the next ladleful. This process should take around 20 minutes until the rice is creamy and al dente.
Once the rice has reached the desired texture, gently fold in the lobster meat, remaining butter, and grated Parmesan cheese. Season with salt and pepper to taste.
Remove from heat and let it sit for a minute. Serve immediately, garnished with fresh parsley.