Dec 19 (Reuters) - Transalta Corp TA.TO :
* Transalta corporation announces preferred share exchange
* Transalta - Terms of new preferred shares to be substantially same as terms of existing first preferred shares with exception of adjustment to reset spread to 5.29%
* Transalta Corp - Terms of new preferred shares will include addition of a minimum reset coupon rate of 6.5% Source text for Eikon: Further company coverage: TA.TO