Rigel Pharmaceuticals, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cash, Cash Equivalents and Short-Term Investments (Details)

Cash, Cash Equivalents and Short-Term Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Cash, cash equivalents and short term investments.
Cash and cash equivalents	$ 14,269	$ 43,456	$ 42,718	$ 15,203
Short-term investments	89,363	82,820
Cash, cash equivalents and short-term investments	103,632	126,276
Money Market Funds
Cash, cash equivalents and short term investments.
Cash, cash equivalents and short-term investments	4,883	26,291
U S Treasury Securities
Cash, cash equivalents and short term investments.
Cash, cash equivalents and short-term investments	9,062	9,048
U S Government-Sponsored Enterprises Securities
Cash, cash equivalents and short term investments.
Cash, cash equivalents and short-term investments	29,236	48,613
Corporate Bonds And Commercial Paper
Cash, cash equivalents and short term investments.
Cash, cash equivalents and short-term investments	60,113	40,206
Cash
Cash, cash equivalents and short term investments.
Cash, cash equivalents and short-term investments	$ 338	$ 2,118

- Definition

Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

+ References + Details