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We analyze sunspots rotation and magnetic transients in NOAA AR 11429 duringtwo X-class (X5.4 and X1.3) flares using the data from the Helioseismic andMagnetic Imager on board the \emph{Solar Dynamics Observatory}. A large leadingsunspot with positive magnetic polarity rotated counterclockwise. As expected,the rotation was significantly affected by the two flares. The magnetictransients induced by the flares were clearly evident in the sunspots withnegative polarity. They were moving across the sunspots with speed of order$3-7\ \rm km \ s^{-1}$. Furthermore, the trend of magnetic flux evolution ofthese sunspots exhibited changes associated with the flares. These results mayshed light on the understanding of the evolution of sunspots.

Sunspots rotation and magnetic transients associated with flares in NOAA AR 11429