In a large pot, melt the butter over medium heat. Add the diced onion, celery, and carrot. Sauté for about 5 minutes until the vegetables are softened.
Stir in the minced garlic and cook for an additional minute until fragrant.
Add the diced potatoes and seafood stock to the pot. Bring to a boil, then reduce the heat and simmer for about 15 minutes, or until the potatoes are tender.
Stir in the heavy cream, chopped lobster meat, and Old Bay seasoning. Simmer for another 5 minutes to heat through.
Season with salt and pepper to taste.
Serve hot, garnished with chopped fresh parsley.