To rotate a point \( (x, y) \) 180 degrees counterclockwise around the origin, the new coordinates will be \( (-x, -y) \).
For the point \( (-4, -6) \):
- The x-coordinate changes from -4 to 4.
- The y-coordinate changes from -6 to 6.
Thus, the new coordinates after a 180-degree rotation are \( (4, 6) \).
Therefore, the answer is \( (4, 6) \).