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Mandatory Disclosure and Firm Behavior: Evidence from Share Repurchases

Alice A. Bonaime

University of Arizona

July 25, 2014

Accounting Review, Forthcoming

This paper examines changes in corporate behavior around the 2003 modification to SEC Rule 10b-18, which mandates enhanced disclosure of repurchase transactions. Firms announce significantly fewer and slightly smaller open market repurchase plans in the enhanced disclosure environment. However, completion rates (the amount of stock repurchased as a percentage of the announced amount) significantly increase. More conservative announcement strategies and more aggressive completion rates are consistent with a decline in false signaling. Indeed, open market repurchase announcements are viewed as more credible on average in the enhanced disclosure environment; after controlling for firm characteristics, cumulative abnormal announcement returns are significantly greater in the high disclosure period. As with any analysis based on a regulatory change affecting all firms simultaneously, other unobservable, macroeconomic trends could have affected repurchase behavior. Nonetheless, these results are consistent with significant changes in corporate behavior around new mandatory disclosures.

Number of Pages in PDF File: 53

Keywords: Disclosure, information asymmetry, share repurchases, share buyback, repurchase completion rate

JEL Classification: G14, G30, G35, G38, M48, K22

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Date posted: April 6, 2010 ; Last revised: July 26, 2014

Suggested Citation

Bonaime, Alice A., Mandatory Disclosure and Firm Behavior: Evidence from Share Repurchases (July 25, 2014). Accounting Review, Forthcoming. Available at SSRN: https://ssrn.com/abstract=1585459 or http://dx.doi.org/10.2139/ssrn.1585459

Contact Information

Alice A. Bonaime (Contact Author)
University of Arizona ( email )
Eller College of Management
Department of Finance
Tucson, AZ 85721
United States
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