 Shares of Potbelly Corp. rallied 10 in the extended session Wednesday after the restaurant chain selling sandwiches and other items reported a wider second-quarter loss but said its same-store sales improved toward the end of the quarter and that it now expects to have to permanently close fewer restaurants. Its weekly cash burn also trended lower throughout the quarter and is down about 75 from the early weeks of the pandemic, the company said. Potbelly said it lost 22.2 million, or 93 cents a share, in the quarter, compared with a net loss of 1.9 million, or 8 cents a share, in the year-ago period. Adjusted for one-time items, Potbelly lost 63 cents a share, compared with a loss of less than a penny a year ago. Revenues fell to 56.2 million from 105.6 million. Analysts polled by FactSet had expected an adjusted loss of 46 cents a share on sales of 65 million. Same-store sales steadily improved throughout the quarter, from a late March low of down 68, to a decline in the mid-20 range for June, the company said. Potbelly had 29.1 million in cash and kept 16.7 million available under a revolving credit facility, it said. Its total liquidity was 45.8 million, flat compared with 45.8 million at the end of the first quarter. Potbelly said it continues to have constructive discussions with landlords, resulting in 16 permanent shop closures and 187 leases renegotiated as of early August. It now expects to have to permanently close fewer than 50 stores, compared to up to 100 as it previously expected, the company said. Shares of Potbelly ended the regular trading session down 4.5. 