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We use event-time methodology to study legal insider trading associated with mergers circa 1900. For mergers with “prospective” disclosures similar to today's, we find substantial value gains at announcement, implying participation by “out-side” shareholders despite the absence of insider constraints. Furthermore, preannouncement stock-price runups, relative to total value gain, are no more than those observed for modern mergers. Insider regulation apparently has produced little benefit for outsiders, with the inside information-pricing function and related gains shifting to external “information specialists.” Other results suggest market penalties for nondisclosure; i.e., insider trading is less successful in a restricted information environment. (JEL G3, K2, L5, N2)

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An analysis of the sequence of bidding in corporate control contests involving white knights reveals a category of white knights termed as ‘delayed bid’ white knights who make their bid after two consecutive hostile bids. The ‘immediate bid’ white knights make their bid in relative haste after the first hostile bid. Overpayments by white knights are much larger for the ‘immediate bid’ white knights. An analysis of the respective compensation packages shows that the managers of the ‘immediate bid’ white knights have a lower proportion of their income linked to stock value (relative to their annual cash income) compared to ‘delayed bid’ white knights and hostile bidders.