Deal Flow
Letter · prints on one page
Transaction tear sheetData as of Nov 7, 2026
M&A · Financials · Real Estate Investment Trusts

American Tower Corp to acquire CoreSite Realty Corp

Announced Nov 15, 2021 · Closed Dec 28, 2021

Deal value$7.51BEV $9.29B
Premium—To unaffected price
EV / Adj. EBITDA27.2x14.6x EV / Revenue
ConsiderationAll cash$170.00 per share

Transaction

Acquirer
American Tower Corp (AMT)
Target
CoreSite Realty Corp
Buyer type
Strategic
Offer price per share
$170.00
Enterprise value
$9.29B
Status
Closed Dec 28, 2021

Deal protections

Break fee (target pays)
$300M · 4.0%
Reverse fee (buyer pays)
—
Go-shop
No-shop
Financing
—

Advisors

To the acquirer
JPMorgan
To the target
Evercore
Evercore fee
$61.0M

Sector context · Financials

Comparable deals
65 in the prior 24 months
Premium
Sector median 33.9%
EV / Adj. EBITDA
27.2x vs. 21.6x sector median
Break fee
4.0% vs. 3.6% sector median

Timeline

  1. AnnouncedNov 15, 2021
  2. Tender offerNov 29, 2021
  3. ClosedDec 28, 2021

Valuation · fairness opinions

Trading comparables$130.95$153.75
Trading comparables$137.95$161.95
Precedent transactions$131.05$159.00
Precedent transactions$119.15$156.20
Precedent transactions$115.00$166.75
Offer $170.00

Implied value per CoreSite Realty Corp share by analysis, from Evercore.

Sources
  • 8-K (EX-99) · Nov 15, 2021
  • SC TO-C (EX-99.1) · Nov 15, 2021
  • 8-K · Nov 15, 2021

Adj. EBITDA is operating income + D&A + impairment, restructuring, deal costs and stock compensation, less any large gain on a sale, last twelve months, from the target's filings. Calculated by Castle, so it can differ from a bank's adjusted figure.

Prepared with Castle from public SEC EDGAR filings. Figures are extracted automatically; verify against the source documents. Not investment advice.