Deltic Timber : Fourth quarter & Full-Year 2017 Earnings Release Date

Deltic Timber

CorporationNEWS RELEASE

210 EAST ELM STREET EL DORADO, AR 71730

NYSE: DEL

FOR RELEASE

IMMEDIATELY January 17, 2018

Deltic Announces Fourth Quarter and Full-Year 2017 Earnings Release Date

EL DORADO, AR - Deltic Timber Corporation (NYSE-DEL) today announced that it will release fourth quarter and full-year 2017 earnings on Wednesday, February 14, 2017, after the market closes. Deltic will not be hosting a call to discuss results due to the pending merger with Potlatch Corporation. The earnings release will be available through the Investor Relations section of the Deltic website atwww.deltic.com.

About Deltic

Deltic Timber Corporation is a natural resources company focused on the efficient and environmentally responsible management of its land holdings. The Company owns approximately 530,000 acres of timberland, operates two sawmills and a medium density fiber-board plant, and is engaged in real estate development. Headquartered in El Dorado, Arkansas, the Company's operations are located primarily in Arkansas and north Louisiana.

CONTACT:

Anna Torma (870) 881-6463ir@deltic.com