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S-3 ·Filed Mar 13, 2026

KRRO

Korro Bio, Inc.
BEARISH
Impact 7/10
Horizondays Processed7mo ago SEC0001193125-26-106378
Shelf registration — potential dilution
Actionable Insight ▼ Bearish

Monitor for near-term share sales by the listed institutional investors, which could pressure the stock price. The disconnect between insider buying and this dilutive registration suggests potential short-term volatility. Evaluate if the $85M cash infusion justifies the dilution given the company's cash runway and development timeline.

DirectionBearish
Confidencehigh
Horizondays
Final — all horizons settled through T+60d ⚠ clustered
KRRO ▼ -15.95% at T+60d
SHORT call ✓ call won +15.95% · α vs SPY +26.44% · entry $12.60 → $10.59
Entry = T+0 close
Mar 13, 2026
via day close
T+1d
-2.30%
call +2.30% · α +2.57%
$12.31
settled 8mo ago
T+5d
-10.56%
call +10.56% · α +8.51%
$11.27
settled 7mo ago
T+20d
+10.56%
call -10.56% · α -6.78%
$13.93
settled 7mo ago
T+60d
-15.95%
call +15.95% · α +26.44%
$10.59
settled 5mo ago

Price Chart

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Executive Summary

Korro Bio has filed a shelf registration (S-3) to register the resale of up to 7,650,764 shares of common stock, including 4.5 million shares and 3.1 million shares issuable upon exercise of pre-funded warrants, sold in a private placement that raised $85 million. The company will not receive proceeds from these resales, but will bear registration costs. This signals potential near-term share issuance and dilution for existing shareholders.

Key Financial Metrics

Offering Size
$88.7M
Dilution
53.03%

Key Facts

  • S-3 shelf registration filed for resale of 7,650,764 shares (4.5M shares + 3.1M warrant shares)
  • Shares were issued in a private placement on March 10, 2026, raising $85 million
  • Company will not receive proceeds from resales (only nominal $0.001 per warrant exercise)
  • Company bears registration expenses ($550k estimated)
  • Recent insider buying: 10 buys totaling $25M in 30 days
  • Market cap: $108M, current share price: $11.50

Financial Impact

Up to $88.7 million in potential dilution (7.1M shares at $12.49 average price)

dilutionmarket capshare price

Risk Factors

  • Significant near-term dilution as up to 7.65M shares could flood the market
  • Potential stock price pressure from selling by institutional investors
  • Dilution of existing shareholders without direct benefit to the company

Market Snapshot

Exchange
Nasdaq

Investment Themes

Documents Analyzed

This report is based on 8 SEC documents filed with EDGAR.

DocumentAccession Number
S-3 Filing (Primary)0001193125-26-106378
Document: d42330dexfilingfees.htm0001193125-26-106378
Document: d42330dex51.htm0001193125-26-106378
Document: d42330dex231.htm0001193125-26-106378
Document: 0001193125-26-106378-index-headers.html0001193125-26-106378
Document: 0001193125-26-106378-index.html0001193125-26-106378
Document: 0001193125-26-106378.txt0001193125-26-106378
CONTEXT: 10-Q (2025-11-12)0001193125-25-277572
19 reports for KRRO
Performance horizon
67% Hit rate @ T+1 4 of 6 directional calls Went positive at some point 5 of 6 best @ T+5▲ +50.38%May 19, 2026
Filters
Rows
Reports for KRRO — sortable, filterable
TypeNow
Oct 26, 2026
today
Insider Buy
BULLISH ★ 5/10
$12.46awaiting T+1—$11.98 (−3.85%)
Oct 22, 2026
4d ago
8-K
BULLISH ★ 6/10
$12.05 $11.98▼ −0.58%▼ −0.06%$11.98 (−0.58%)
Oct 16, 2026
10d ago
Press Release
NEUTRAL ★ 2/10
$8.91 $9.44▲ +5.95%▲ +5.61%$11.98 (+34.46%)
Oct 5, 2026
21d ago
8-K
NEUTRAL ★ 4/10
$9.76 $10.49▲ +7.48%▲ +7.72%$11.98 (+22.75%)
Oct 5, 2026
21d ago
Press Release
NEUTRAL ★ 4/10
$9.76 $10.49▲ +7.48%▲ +7.72%$11.98 (+22.75%)
Sep 15, 2026
5w ago
Insider Cluster
NEUTRAL ★ 2/10
$13.83 $11.80▼ −14.68%▼ −15.81%$11.98 (−13.38%)
Aug 13, 2026
10w ago
Insider Cluster
NEUTRAL ★ 4/10
$13.29 $13.28▼ −0.08%▲ +0.12%$11.98 (−9.86%)
Aug 6, 2026
11w ago
8-K
BULLISH ★ 6/10
$12.12 $13.25▲ +9.32%▲ +8.71%$11.98 (−1.16%)
Jul 9, 2026
15w ago
Institutional Cluster
BULLISH ★ 6/10
$14.30 $14.56▲ +1.82%▲ +1.39%$11.98 (−16.22%)
Jun 24, 2026
17w ago
Insider Cluster
BEARISH ★ 6/10
$12.17 $12.70▼ −4.36%▼ −5.08%$11.98 (+1.56%)
Showing 10 of 19

US Market Status

Market Closed — Opens Wed (11h 59m)

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Report published Mar 13, 2026