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8-K ·Filed Sep 18, 2026

HALO

HALOZYME THERAPEUTICS, INC.
MIXED
Impact 6/10
Horizonweeks Processed1mo ago SEC0001159036-26-000126
8-K context-dependent: Items 8.01
Actionable Insight ◆ Mixed

The refinancing extends Halozyme's debt maturity profile from 2027/2028 to 2033 at a higher coupon (1.50% vs 0.25%/1.00%), adding ~$1.3B in leverage. The capped call structure limits dilution risk up to ~$208.39 per share. Watch for initial purchasers' exercise of the $200M greenshoe option and any subsequent hedging activity by capped call counterparties that could pressure the stock price near conversion periods.

DirectionMixed
Confidencehigh
Horizonweeks
Latest settled — T+20d ⚠ clustered
HALO ▲ +8.35% at T+20d
NEUTRAL call +8.35% · α vs SPY +8.15% · entry $112.45 → $121.84
Next anchor: T+60d in 7w
Latest observation: T+25 -6.75% FF3 residual α
Entry = T+0 close
Sep 18, 2026
via day close
T+1d
-0.89%
call -0.89% · α -2.44%
$111.45
settled 5w ago
T+5d
+1.29%
call +1.29% · α +0.02%
$113.90
settled 4w ago
T+20d
+8.35%
call +8.35% · α +8.15%
$121.84
settled 10d ago
T+60d
Pending
in 7w

Price Chart

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Executive Summary

Halozyme priced an upsized $1.3 billion private offering of 1.50% convertible senior notes due 2033, with an additional $200 million option for initial purchasers. Net proceeds of ~$1.275 billion (or ~$1.471 billion if the option is exercised) will be used to fund capped call transactions ($162.5M), repurchase ~$652.5M of existing 2027/2028 convertible notes, and for general corporate purposes. The transaction extends the company's debt maturity profile and reduces near-term convertible note overhang, but adds $1.3B in new leverage.

Key Facts

  • Priced $1.3 billion aggregate principal amount of 1.50% convertible senior notes due 2033, upsized from $1.05 billion
  • Initial conversion price of ~$139.84 per share, representing a 27.5% premium over the $109.68 closing price on September 9, 2026
  • Granted a 13-day option to initial purchasers to purchase up to an additional $200 million in notes
  • Net proceeds of ~$1.275 billion (or ~$1.471 billion if option exercised) after discounts and expenses
  • Will use ~$162.5 million to fund capped call transactions with a cap price of ~$208.39 per share (90% premium)
  • Will repurchase ~$151.7M of 0.25% convertible notes due 2027 for ~$217.0M total cost and ~$220.0M of 1.00% convertible notes due 2028 for ~$435.5M total cost
  • Remaining proceeds for general corporate purposes including potential acquisitions and strategic transactions
  • Capped call transactions reduce potential dilution upon conversion; dilution still occurs if stock exceeds ~$208.39 cap price
  • Capped call counterparties may enter derivative transactions affecting HALO stock price around pricing and conversion periods

Financial Impact

New $1.3B debt issuance with $652.5M used to retire existing convertible notes; net new cash inflow of ~$1.275B before capped call cost

debtdilutioninterest expensecash

Risk Factors

  • Dilution risk if stock exceeds ~$208.39 cap price, where capped call protection ends and full dilution applies
  • Potential stock price pressure from capped call counterparty hedging activities around pricing and conversion observation periods
  • Higher annual interest expense from 1.50% coupon vs 0.25%/1.00% on retired notes increases fixed charges
  • Use of proceeds for 'potential acquisitions and strategic transactions creates uncertainty about capital allocation discipline

Investment Themes

Documents Analyzed

This report is based on 5 SEC documents filed with EDGAR.

DocumentAccession Number
8-K Filing (Primary)0001159036-26-000126
Exhibit: ex-991xhaloxpricingpressre.htm0001159036-26-000126
Document: 0001159036-26-000126-index-headers.html0001159036-26-000126
Document: 0001159036-26-000126-index.html0001159036-26-000126
Document: 0001159036-26-000126.txt0001159036-26-000126
12 reports for HALO
Performance horizon
0% Hit rate @ T+1 0 of 3 directional calls Went positive at some point 0 of 3 best @ T+1▼ −0.23%Oct 20, 2026
Filters
Rows
Reports for HALO — sortable, filterable
TypeNow
Oct 22, 2026
4d ago
Press Release
NEUTRAL ★ 1/10
$124.54 $125.63▲ +0.88%▲ +1.40%$128.01 (+2.79%)
Oct 20, 2026
6d ago
Institutional Cluster
BULLISH ★ 4/10
$124.83 $124.54▼ −0.23%▲ +0.95%$128.01 (+2.55%)
Oct 15, 2026
11d ago
PTAB Trial
BEARISH ★ 7/10
$121.84 $122.50▼ −0.54%▼ −0.12%$128.01 (−5.06%)
Oct 15, 2026
11d ago
PTAB Trial
BEARISH ★ 7/10
$121.84 $122.50▼ −0.54%▼ −0.12%$128.01 (−5.06%)
Sep 18, 2026
5w ago
8-K
MIXED ★ 6/10
$112.45 $111.45▼ −0.89%▼ −2.44%$128.01 (+13.84%)
Sep 17, 2026
5w ago
Insider Cluster
NEUTRAL ★ 2/10
$112.45 $111.45▼ −0.89%▼ −2.44%$128.01 (+13.84%)
Aug 19, 2026
9w ago
Insider Cluster
NEUTRAL ★ 2/10
$106.12 $108.17▲ +1.93%▲ +1.52%$128.01 (+20.63%)
Jul 9, 2026
15w ago
Insider Cluster
NEUTRAL ★ 2/10
$76.20 $76.11▼ −0.12%▲ +0.65%$128.01 (+67.99%)
Jul 2, 2026
16w ago
Insider Cluster
NEUTRAL ★ 3/10
$80.78 $81.57▲ +0.98%▲ +1.45%$128.01 (+58.47%)
Jun 3, 2026
20w ago
Insider Cluster
NEUTRAL ★ 2/10
$71.60 $71.53▼ −0.10%▲ +2.50%$128.01 (+78.78%)
Showing 10 of 12

US Market Status

Market Closed — Opens Tue (< 1m)

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Report published Sep 18, 2026