Sociedad de Inversiones Pampa Calichera, S.A. announced that it has extended the date by which holders of their outstanding 7.75% Senior Secured Notes due 2022 (Rule 144A: CUSIP No. 83363TAA1 and ISIN US83363TAA16; Regulation S: CUSIP No. P8716HAA1 and ISIN USP8716HAA16) must tender their Notes from December 28, 2015 to January 6, 2016.

The tender offer consideration in connection with the current tender offer for up to $70 million in value of outstanding Notes is $1,020 for each $1,000 in principal amount of Notes. The Tender Offer is being made on the terms and subject to the conditions set forth in the Offer to Purchase, dated September 10, 2015, as amended. Upon the terms and subject to the conditions described in the Offer to Purchase, Pampa Calichera is offering to purchase for cash up to $70 million in value of the Notes.

Pampa Calichera has extended the previously announced Expiration Time as defined below. Subject to the terms and conditions of the Tender Offer, Holders must now validly tender and not properly withdraw their Notes at or before 5:00 p.m., New York City time, on January 6, 2016, unless such date and time are extended or the Tender Offer is earlier terminated by Pampa Calichera in its sole discretion, subject to applicable law to receive the Tender Offer Consideration. Holders must validly tender and not properly withdraw their Notes at or before the Expiration Time in order to be eligible to receive the Tender Offer Consideration.

Tenders of Notes may be withdrawn at any time before the Expiration Time but not thereafter, except as required by law. Note, however, that Pampa Calichera may at any time or from time to time extend either the Expiration Time or the Withdrawal Deadline and retain all Notes tendered pursuant to such Offer. The Tender Offer will expire at the Expiration Time, unless otherwise extended.