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    • All HBS Web  (17)
      • Faculty Publications  (11)

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      • August 2021
      • Teaching Note

      Air Products' Pursuit of Airgas

      By: Charles C.Y. Wang and Paul M. Healy
      Teaching Note for HBS Case Nos. 116-024, 116-025, 118-080, and 118-081.  View Details
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      Wang, Charles C.Y., and Paul M. Healy. "Air Products' Pursuit of Airgas." Harvard Business School Teaching Note 122-020, August 2021.
      • August 2021
      • Supplement

      Airgas Valuation Instructor

      By: Charles C.Y. Wang
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      Wang, Charles C.Y. "Airgas Valuation Instructor." Harvard Business School Spreadsheet Supplement 122-706, August 2021.
      • August 2021
      • Supplement

      Airgas Valuation Student

      By: Charles CY Wang
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      Wang, Charles CY. "Airgas Valuation Student." Harvard Business School Spreadsheet Supplement 122-705, August 2021.
      • February 2018
      • Supplement

      Air Products' Pursuit of Airgas (C)

      By: Charles C.Y. Wang, Paul M. Healy and Kyle Thomas
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      Wang, Charles C.Y., Paul M. Healy, and Kyle Thomas. "Air Products' Pursuit of Airgas (C)." Harvard Business School Supplement 118-080, February 2018.
      • February 2018
      • Supplement

      Air Products' Pursuit of Airgas (D)

      By: Charles C.Y. Wang, Paul M. Healy and Kyle Thomas
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      Wang, Charles C.Y., Paul M. Healy, and Kyle Thomas. "Air Products' Pursuit of Airgas (D)." Harvard Business School Supplement 118-081, February 2018.
      • September 2017
      • Article

      Reexamining Staggered Boards and Shareholder Value

      By: Charles C.Y. Wang and Alma Cohen
      Cohen and Wang (2013) (CW2013) provide evidence consistent with market participants perceiving staggered boards to be value reducing. Amihud and Stoyanov (2016) (AS2016) contests these findings, reporting some specifications under which the results are not...  View Details
      Keywords: Staggered Boards; Takeover Defense; Antitakeover Provision; Firm Value; Delaware; Airgas; Governing and Advisory Boards; Corporate Governance; Value
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      Wang, Charles C.Y., and Alma Cohen. "Reexamining Staggered Boards and Shareholder Value." Journal of Financial Economics 125, no. 3 (September 2017): 637–647.
      • 2015
      • Working Paper

      Staggered Boards and Shareholder Value: A Reply to Amihud and Stoyanov

      By: Alma Cohen and Charles C.Y. Wang
      In a paper published in the Journal of Financial Economics in 2013, we provided evidence that market participants perceive staggered boards to be on average value-reducing. In a recent response paper, Amihud and Stoyanov (2015) “contest” our results. They...  View Details
      Keywords: Staggered Boards; Takeover Defense; Antitakeover Provision; Firm Value; Agency Costs; Delaware; Chancery Court; Airgas; Governing and Advisory Boards; Acquisition; Corporate Governance; Business and Shareholder Relations; Delaware
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      Cohen, Alma, and Charles C.Y. Wang. "Staggered Boards and Shareholder Value: A Reply to Amihud and Stoyanov." Harvard Business School Working Paper, No. 16-097, February 2016.
      • November 2015 (Revised March 2018)
      • Supplement

      Air Products' Pursuit of Airgas (B)

      By: Charles C.Y. Wang, Paul M. Healy and Kyle Thomas
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      Wang, Charles C.Y., Paul M. Healy, and Kyle Thomas. "Air Products' Pursuit of Airgas (B)." Harvard Business School Supplement 116-025, November 2015. (Revised March 2018.)
      • November 2015 (Revised March 2018)
      • Case

      Air Products' Pursuit of Airgas (A)

      By: Charles C.Y. Wang, Paul M. Healy, Penelope Rossano and Kyle Thomas
      This case centers around the Air Products' hostile takeover attempt of Airgas in 2010. Air Products argued that its offer of a 38% premium is generous given Airgas' poor performance, which Air Products attributed to underperforming and entrenched managers at Airgas. On...  View Details
      Keywords: Acquisition; Business and Shareholder Relations; Industrial Products Industry; Energy Industry; Chemical Industry
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      Wang, Charles C.Y., Paul M. Healy, Penelope Rossano, and Kyle Thomas. "Air Products' Pursuit of Airgas (A)." Harvard Business School Case 116-024, November 2015. (Revised March 2018.)
      • June 2014
      • Case

      Airgas, Inc.

      By: Eric Van den Steen and Jason Karl
      In 2013, Airgas was the market leader in packaged industrial gas distribution. Recent acquisitions had made it into a larger player in upstream gas production as well, where it competed with Praxair and Air Products. Should Airgas continue building a position in gas...  View Details
      Keywords: Strategy; Competitive Advantage; Competitive Strategy; Competency and Skills; Value Creation
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      Van den Steen, Eric, and Jason Karl. "Airgas, Inc." Harvard Business School Case 714-517, June 2014.
      • December 2013
      • Article

      How Do Staggered Boards Affect Shareholder Value? Evidence from a Natural Experiment

      By: Alma Cohen and Charles C.Y. Wang
      The well-established negative correlation between staggered boards (SBs) and firm value could be due to SBs leading to lower value or a reflection of low-value firms' greater propensity to maintain SBs. We analyze the causal question using a natural experiment...  View Details
      Keywords: Staggered Board; Takeover Defense; Antitakeover Provision; Proxy Fight; Tobin's; Firm Value; Agency Cost; Delaware; Chancery Court; Airgas; Governing and Advisory Boards; Corporate Governance
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      Cohen, Alma, and Charles C.Y. Wang. "How Do Staggered Boards Affect Shareholder Value? Evidence from a Natural Experiment." Journal of Financial Economics 110, no. 3 (December 2013): 627–641.
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