An employer identification number (EIN) is like a Social Security number (SSN) for a business. The IRS assigns an EIN — also known as a federal tax ID number — to any business that is eligible. EINs ...
Trelstad, Brian, Nien-hê Hsieh, Michael Norris, and Susan Pinckney. "Patagonia: 'Earth Is Now Our Only Shareholder'." Harvard Business School Case 323-057, March 2023. (Revised September 2023.) ...