Abstract
Insider trading in target companies prior
to mergers and acquisitions (M&A) can be regarded as an important
information about the future profitability of the company. Suk and Wang (2021)
find that net purchases by insiders in target companies are positively
correlated with abnormal returns at the time of the M&A announcement,
M&A synergy, bid premiums, and the probability of M&A completion. Fu et
al. (2020) document that long-term investment horizon shareholders can impede
insider trading because they can obstruct insiders from using their
informational advantages through direct supervision. In this paper, we find
that the positive impact of net insider purchases in target companies on
abnormal returns at the time of the M&A announcement is stronger in
companies with shorter shareholder investment horizons. However, there is no
evidence to support that net insider purchases in target companies have a
stronger positive impact on M&A synergy in companies with shorter
shareholder investment horizons. Furthermore, there is no evidence to indicate
that net insider purchases in target companies have an impact on bid premiums,
nor that this impact is stronger in companies with shorter shareholder
investment horizons. Moreover, we find that the positive impact of net insider
purchases in target companies on the probability of M&A completion is
stronger in companies with shorter shareholder investment horizons.
JEL classification numbers: G11, G14, G34.
Keywords: Insider trading, Shareholder investment horizon, Insider
investment horizon, Acquisition.