📖 Another biotech buyout case study:
$PRVB (Provention Bio)
$SNY Sanofi buyout $25/sh
Buyout premium was 260% and shows again share price of a biotech w/ novel MOA high potential is not always valued properly by market.
Negotiation timeline w/ monthly
$PRVB price
Early engagement and partnership track
Dec 2021: Preliminary discussions begin (Sanofi-initiated), using public info around teplizumab FDA approval/commercialization.
$PRVB (Dec 2021): $5.62
Feb 2022: Execute Teplizumab confidentiality agreement; Sanofi begins diligence.
$PRVB (Feb 2022): $6.27
Feb–Oct 2022: Various teplizumab partnership proposals considered.
$PRVB $6.27 → Oct 2022 $6.94
Oct 4, 2022: Genzyme (Sanofi sub) Execute Co-Promotion Agreement Securities Purchase Agreement.
$PRVB (Oct 2022): $6.94
Dec 7, 2022: Provention mgmt ↔ Sanofi GM, Meeting re co-promotion; Sanofi expresses broader interest (PRV-101, PRV-3279).
$PRVB (Dec 2022): $10.57
Dec 13, 2022: Board update on Sanofi discussions / ROFN scope / broader pipeline interest.
$PRVB (Dec 2022): $10.57
Formal sale-process governance and acquisition framing
Jan 17, 2023: Board; counsel; BofA; Centerview. Board discusses acquisition approach prep; forms special committee to oversee evaluation of potential sale transactions.
$PRVB (Jan 2023): $8.66
Jan 25–27, 2023: Provention mgmt ↔ Sanofi mgmt, Paris meetings: manufacturing, label expansion, LCM, geo expansion, plus potential acquisition / investment structures.
$PRVB (Jan 2023): $8.66
Jan 30, 2023: Committee review of Paris discussions; plan updates; advisor engagement planning.
$PRVB (Jan 2023): $8.66
Feb 3: (date stated in filing; appears out of sequence) CEO ↔ Sanofi M&A head Call: Sanofi reaffirms interest in exploring acquisition or ROFN-based global licensing partnership.
$PRVB (Feb 2022): $6.27
Feb 4, 2023:Board chair ↔ Sanofi EVP GM, Sanofi expresses interest in a transaction; board chair indicates willingness to consider a proposal.
$PRVB (Feb 2023): $8.30
Feb 10, 2023: Provention ↔ Aventis (Sanofi affiliate), Company issues/sells 2,712,497 shares at $12.9032/share (~$35m).
$PRVB (Feb 2023): $8.30
Feb 10, 2023: Committee; mgmt; advisors; counsel, Committee reviews updated forecasts; requests refinement (risk/probability assumptions).
$PRVB (Feb 2023): $8.30
Indications of interest, exclusivity, diligence, definitive docs
Feb 14, 2023: Sanofi Non-binding IOI: $21.00/share cash (“Feb 14 Proposal”).
$PRVB (Feb 2023): $8.30
Feb 14, 2023: Committee meets after IOI; continues forecast refinements.
$PRVB (Feb 2023): $8.30
Feb 16, 2023: Board reviews Feb 14 proposal; directs revisions to downside assumptions/probabilities.
$PRVB (Feb 2023): $8.30
Feb 19, 2023: Board reviews revised forecasts and preliminary financial analyses; discusses response strategy and exclusivity.
$PRVB (Feb 2023): $8.30
Feb 22, 2023: Sanofi Revised non-binding IOI: $25.00/share cash (“Feb 22 Proposal”), conditioned on two-week exclusivity from data room open (ending no sooner than Mar 13).
$PRVB (Feb 2023): $8.30
Feb 22, 2023: Provention counsel ↔ Sanofi counsel (Weil), Provention sends drafts of confidentiality, exclusivity, and merger agreement.
$PRVB (Feb 2023): $8.30
Feb 23, 2023: Board meeting; counsel updates on document negotiations.
$PRVB (Feb 2023): $8.30
Feb 23–26, 2023: Confidentiality and exclusivity terms negotiated.
$PRVB (Feb 2023): $8.30
Feb 26, 2023: Sanofi ↔ Provention execute exclusivity confidentiality; open virtual data room.
$PRVB (Feb 2023): $8.30
Feb 26 – Mar 12, 2023: Sanofi diligence under exclusivity; definitive docs negotiated.
$PRVB (Mar 2023): $24.10
Feb 28, 2023: Revised merger agreement drafts exchanged; deal-protection provisions negotiated.
$PRVB (Feb 2023): $8.30
Mar 3, 2023: Further revised merger agreement draft exchanged; superior proposal and termination mechanics refined.
$PRVB (Mar 2023): $24.10
Mar 7–10, 2023: Continued markups; board meeting (Mar 9) authorizes engagements; advisors present preliminary analyses (Mar 10).
$PRVB (Mar 2023): $24.10
Mar 11–12, 2023: Finalize and complete negotiation of merger agreement.
$PRVB (Mar 2023): $24.10
Mar 12, 2023: Board; BofA; Centerview, Board approves merger agreement; advisors deliver fairness opinions; board recommends tender.
$PRVB (Mar 2023): $24.10
Signing, tender, regulatory, close
Mar 13, 2023: Public announcement: acquire PRVB at $25/share cash.
$PRVB (Mar 2023): $24.10
prismmarketview.com/proventi…