Using the Delaware Supreme Court's Time-Warner decision of July 1989 as a focal point, we study defeated takeover bids before and after July 1989 to assess the direct effects of stronger takeover impediments on takeover defense tactics used to defeat bids and the resulting shareholder wealth outcomes and managerial turnover. We find that firms that defeated takeover bids after July 1989 shifted away from the use of active takeover defenses (repurchases, special dividends, greenmail, and leverage increases). Nevertheless, shareholders of firms that defeat a takeover experienced slightly better wealth outcomes in the 1990s than in the 1980s. We also find increased managerial turnover rates after defeating a takeover bid post Time-Warner, suggesting that managers that defeat hostile takeover bids did not become more entrenched due to greater takeover impediments relative to prior years.

Signaling undervaluation is often considered a primary motive for repurchasing stock, but insider trading activity by repurchasing firms is not always consistent with undervaluation. Net insider buying and selling are both more frequent in quarters when firms are repurchasing non-trivial amounts of stock, with the odds of observing a repurchase the highest in quarters with net insider selling. In multinomial logit models, share repurchases associated with net insider selling are positively related to illiquidity, option exercises by insiders, and pre-repurchase returns and negatively correlated with industry-adjusted book to market ratios when compared to other repurchases. Hence, repurchases when insiders are selling stock are more likely done to support share prices or avoid dilution and are less likely undervaluation signals. We find that insider trades either validate or mitigate the undervaluation signal of the repurchase. Abnormal returns of repurchasing firms with net insider buying versus net insider selling in a given quarter are significantly higher for the quarter immediately after the repurchase and the three subsequent years. For repurchases accompanied by net insider selling, abnormal returns are negligible after only one year.