Dear Pratap
The file is called ?h.aparc.a2005s_300.stats as you suggested. The commands I used are the following:
mris_divide_parcellation fsaverage_fineparc ?h aparc.a2005s.annot 300 ?h.aparc.a2005s_300.annot
mri_surf2surf --srcsubject fsaverage_fineparc --sval-annot aparc.a2005s_300.annot --trgsubject 001--tval aparc.a2005s_300.annot --hemi ?h
mris_anatomical_stats -a aparc.a2005s_300.annot -t ?h.thickness -b -f 001/stats/?h.aparc.a2005s_300.stats 001 ?h
aparcstats2table --subjects 001 002 003 --hemi ?h --parc aparc.a2005s_300 --meas thickness -t ?h_aparc.a2005s_300_stat.txt
Thanks for your help Diana