Deal Flow
Letter · prints on one page
Transaction tear sheetData as of Nov 7, 2026
M&A · Healthcare · Biological Products, (No Diagnostic Substances)

Eli Lilly & Co to acquire Adverum Biotechnologies, Inc.

Announced Oct 24, 2025 · Closed Dec 9, 2025

Deal value$75MEV $32M
Premium26.0%To unaffected price
EV / Adj. EBITDA—32.3x EV / Revenue
ConsiderationAll cash$3.56 per share

Transaction

Acquirer
Eli Lilly & Co (LLY)
Target
Adverum Biotechnologies, Inc. (ADVM)
Buyer type
Strategic
Offer price per share
$3.56
Enterprise value
$32M
Status
Closed Dec 9, 2025

Deal protections

Break fee (target pays)
$4.0M · 5.4%
Reverse fee (buyer pays)
—
Go-shop
No-shop
Financing
No financing condition

Advisors

To the acquirer
Not disclosed
To the target
Aquilo Partners

Sector context · Healthcare

Comparable deals
95 in the prior 24 months
Premium
26.0% vs. 60.0% sector median
EV / Adj. EBITDA
Sector median 14.5x
Break fee
5.4% vs. 3.3% sector median

Timeline

  1. AnnouncedOct 24, 2025
  2. Tender offerNov 7, 2025
  3. ClosedDec 9, 2025

Valuation · fairness opinions

Trading comparables$6.05$10.61
Trading comparables$0.84$11.32
Trading comparables$0.62$0.64
Offer $3.56

Implied value per Adverum Biotechnologies, Inc. share by analysis, from Aquilo Partners · DCF discount rate 25%–35%.

Sources
  • 8-K (EX-99) · Oct 24, 2025
  • SC14D9C (EX-99.1) · Oct 24, 2025
  • SC TO-C (EX-99.1) · Oct 24, 2025
  • 8-K · Oct 24, 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.