Deal Flow
Letter · prints on one page
Transaction tear sheetData as of Nov 7, 2026
M&A · Healthcare · Pharmaceutical Preparations

Bristol Myers Squibb Co to acquire 2seventy bio, Inc.

Announced Mar 10, 2025 · Closed May 13, 2025

Deal value$258MEV $198M
Premium88.0%To unaffected price
EV / Adj. EBITDA—4.3x EV / Revenue
ConsiderationAll cash$5.00 per share

Transaction

Acquirer
Bristol Myers Squibb Co (BMY)
Target
2seventy bio, Inc. (TSVT)
Buyer type
Strategic
Offer price per share
$5.00
Enterprise value
$198M
Status
Closed May 13, 2025

Deal protections

Break fee (target pays)
$10.0M · 3.9%
Reverse fee (buyer pays)
—
Go-shop
No-shop
Financing
No financing condition

Advisors

To the acquirer
Not disclosed
To the target
Goldman Sachs
Goldman Sachs fee
$8.6M

Sector context · Healthcare

Comparable deals
94 in the prior 24 months
Premium
88.0% vs. 66.0% sector median
EV / Adj. EBITDA
Sector median 13.8x
Break fee
3.9% vs. 3.4% sector median

Timeline

  1. AnnouncedMar 10, 2025
  2. Tender offerApr 14, 2025
  3. ClosedMay 13, 2025

Valuation · fairness opinions

Analyst price targets$4.91$5.09
Precedent transactions$3.83$4.58
Offer $5.00

Implied value per 2seventy bio, Inc. share by analysis, from Goldman Sachs · DCF discount rate 14%–16%.

Sources
  • 8-K · Mar 11, 2025

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.