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S-4/A ·Filed Sep 21, 2026

PASG

Passage BIO, Inc.
NEUTRAL
Impact 5/10
Horizonweeks Processed1mo ago SEC0001140361-26-037256
Notable filing: S-4/A
Actionable Insight • Neutral

Monitor the Passage Bio special meeting vote and any updates on the concurrent financing closing. The CVR payments from Gemma license agreements (GM1/MLD programs) are contingent and may provide additional value to Passage Bio stockholders if realized.

DirectionNeutral
Confidencehigh
Horizonweeks
Latest settled — T+20d
PASG ▼ -27.27% at T+20d
NEUTRAL call -27.27% · α vs SPY -26.71% · entry $4.95 → $3.60
Next anchor: T+60d in 7w
Latest observation: T+23 -33.58% FF3 residual α
Entry = T+0 close
Sep 21, 2026
via day close
T+1d
+1.01%
call +1.01% · α +1.73%
$5.00
settled 5w ago
T+5d
-6.46%
call -6.46% · α -5.28%
$4.63
settled 29d ago
T+20d
-27.27%
call -27.27% · α -26.71%
$3.60
settled 8d ago
T+60d
Pending
in 7w

Price Chart

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Executive Summary

Passage Bio (PASG) filed an amended S-4 registration statement for its proposed reverse merger with Remix Therapeutics. Under the amended agreement, pre-merger Remix equityholders (excluding concurrent financing investors) are expected to own ~65% of the combined company, concurrent financing investors ~29%, and current Passage Bio stockholders ~6%, based on a Remix valuation of $226M and a Passage Bio valuation of ~$20M (adjusted for net cash). The merger is contingent on stockholder approval of share issuance, a reverse stock split, and a name change to Remix Therapeutics, with the combined company expected to trade under 'RMTX'.

Key Facts

  • Remix equityholders (pre-concurrent financing) expected to own ~65% of combined company; Passage Bio stockholders ~6%; concurrent financing investors ~29%.
  • Remix fixed valuation of $226M; Passage Bio valuation of ~$20M (subject to net cash adjustment).
  • Concurrent financing expected to yield ~$100M in gross proceeds (~$70M from subscription agreement, ~$30M from convertible notes).
  • Passage Bio stockholders to receive one CVR per share for potential payments from Gemma license agreements (GM1/MLD programs).
  • Combined company to be named Remix Therapeutics, Inc. and expected to trade on Nasdaq under 'RMTX'.
  • Passage Bio Board unanimously recommends voting FOR all proposals.
  • Remix stockholders representing ~93% of outstanding shares have entered into support agreements to vote in favor.
  • Passage Bio stockholders representing ~1% of outstanding shares have entered into support agreements to vote in favor.
  • Lock-up agreements for ~99% of Remix capital stock and ~0.34% of Passage Bio common stock for 180 days post-closing.
  • Termination fee: $1.5M payable by Passage Bio; up to $17.5M payable by Remix under certain circumstances.

Financial Impact

Passage Bio stockholders to own ~6% of combined company; Remix stockholders ~65%; concurrent financing investors ~29%. Combined company implied value ~$346M. Concurrent financing of ~$100M expected to fund operations into early 2028.

ownership dilutioncash positionvaluation

Risk Factors

  • Merger may not close if stockholder approvals are not obtained or conditions not satisfied.
  • Passage Bio stockholders face significant dilution (~6% ownership post-merger).
  • CVR payments from Gemma license agreements are uncertain and may expire worthless.
  • Combined company's success depends on Remix's clinical-stage pipeline (REM-422), which faces development and regulatory risks.
  • Post-merger integration risks and costs associated with operating as a public company.

Investment Themes

Documents Analyzed

This report is based on 2 SEC documents filed with EDGAR.

DocumentAccession Number
S-4/A Filing (Primary)0001140361-26-037256
Document: ny20077915x5_ex10-36.htm0001140361-26-037256
14 reports for PASG
Performance horizon
33% Hit rate @ T+20 2 of 6 directional calls Went positive at some point 4 of 7 best @ T+60▲ +22.24%May 27, 2026
Filters
Rows
Reports for PASG — sortable, filterable
TypeNow
Oct 13, 2026
13d ago
EFFECT
NEUTRAL ★ 3/10
$3.64awaiting T+20—$3.36 (−7.72%)
Oct 8, 2026
18d ago
S-4/A
BEARISH ★ 6/10
$3.69awaiting T+20—$3.36 (+8.97%)
Oct 5, 2026
21d ago
S-4/A
NEUTRAL ★ 5/10
$4.08awaiting T+20—$3.36 (−17.67%)
Sep 21, 2026
5w ago
S-4/A
NEUTRAL ★ 5/10
$4.95 $3.60▼ −27.27%▼ −26.71%$3.36 (−32.14%)
Sep 2, 2026
7w ago
S-4/A / 425
BEARISH ★ 8/10
$4.75 $4.12▲ +13.26%▲ +12.08%$3.36 (+29.28%)
Sep 2, 2026
7w ago
8-K
BULLISH ★ 8/10
$4.75 $4.12▼ −13.26%▼ −12.08%$3.36 (−29.28%)
Jun 24, 2026
17w ago
425
BEARISH ★ 7/10
$4.33 $4.90▼ −13.16%▼ −12.64%$3.36 (+22.42%)
Jun 24, 2026
17w ago
425
BEARISH ★ 7/10
$4.33 $4.90▼ −13.16%▼ −12.64%$3.36 (+22.42%)
Jun 24, 2026
17w ago
8-K
BEARISH ★ 7/10
$4.33 $4.90▼ −13.16%▼ −12.64%$3.36 (+22.42%)
May 27, 2026
21w ago
8-K
BEARISH ★ 6/10
$5.71 $4.70▲ +17.69%▲ +14.54%$3.36 (+41.17%)
Showing 10 of 14

US Market Status

Market Closed — Opens Wed (10h 6m)

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Report published Sep 21, 2026