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SC 13G ·Filed Oct 7, 2026

IOSP

INNOSPEC INC.
NEUTRAL
Impact 3/10
Horizonweeks Processed19d 8h ago SEC0001890906-26-000068
Passive investor 5%+ stake
Actionable Insight • Neutral

Monitor for any future conversion to a Schedule 13D, which would signal activist intent. For now, the filing confirms passive ownership — no immediate catalyst.

DirectionNeutral
Confidencehigh
Horizonweeks
Latest settled — T+5d ⚠ clustered
IOSP ▼ -0.33% at T+5d
NEUTRAL call -0.33% · α vs SPY +0.65% · entry $97.42 → $97.10
Next anchor: T+20d in 8d
Latest observation: T+12 -3.41% FF3 residual α
Entry = T+0 close
Oct 7, 2026
via day close
T+1d
+0.28%
call +0.28% · α +0.70%
$97.69
settled 19d ago
T+5d
-0.33%
call -0.33% · α +0.65%
$97.10
settled 13d ago
T+20d
Pending
in 8d
T+60d
Pending
in 2mo

Price Chart

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Executive Summary

Allspring Global Investments Holdings, LLC filed a Schedule 13G disclosing a 4.7% passive stake in Innospec Inc. as of September 30, 2026. This is an amendment to a prior filing, indicating continued passive ownership without intent to influence management. The stake size is moderate and consistent with routine institutional portfolio management.

Key Financial Metrics

Stake
4.7%
Investor
Allspring Global Investments Holdings, LLC
Investor Type
mutual fund

Key Facts

  • Allspring Global Investments Holdings, LLC holds 1,161,421 shares of Innospec Inc. common stock.
  • The stake represents 4.7% of outstanding shares.
  • The filing is an amendment to a prior Schedule 13G (filed July 31, 2026), indicating no change in passive intent.
  • Allspring certifies the securities were acquired in the ordinary course of business and not to influence control.
  • The filing date is October 7, 2026, with a beneficial ownership date of September 30, 2026.

Financial Impact

4.7% passive stake with no disclosed transaction price or total value; no material financial impact.

Risk Factors

  • Allspring could increase or decrease the stake without public disclosure until crossing the next 5% threshold.
  • No indication of activist intent, but passive filers occasionally convert to 13D if circumstances change.

Investment Themes

Materials & Mining

Documents Analyzed

This report is based on 3 SEC documents filed with EDGAR.

DocumentAccession Number
SC 13G Filing (Primary)0001890906-26-000068
Document: 0001890906-26-000068-index.html0001890906-26-000068
Document: 0001890906-26-000068.txt0001890906-26-000068
14 reports for IOSP
Performance horizon
80% Hit rate @ T+5 4 of 5 directional calls Went positive at some point 5 of 6 best @ T+60▲ +10.65%Jun 16, 2026
Filters
Rows
Reports for IOSP — sortable, filterable
TypeNow
Oct 20, 2026
6d ago
Institutional Cluster
BULLISH ★ 4/10
$99.64awaiting T+5—$99.18 (−0.46%)
Oct 7, 2026
19d ago
SC 13G/A
NEUTRAL ★ 2/10
$97.42 $97.10▼ −0.33%▲ +0.65%$99.18 (+1.81%)
Oct 7, 2026
19d ago
SC 13G
NEUTRAL ★ 3/10
$97.42 $97.10▼ −0.33%▲ +0.65%$99.18 (+1.81%)
Oct 5, 2026
21d ago
Press Release
NEUTRAL ★ 1/10
$98.55 $97.43▼ −1.14%▼ −1.00%$99.18 (+0.64%)
Aug 5, 2026
11w ago
8-K
BULLISH ★ 6/10
$91.96 $93.12▲ +1.26%▲ +0.91%$99.18 (+7.85%)
Aug 4, 2026
11w ago
Press Release
BULLISH ★ 7/10
$91.96 $93.12▲ +1.26%▲ +0.91%$99.18 (+7.85%)
Jul 6, 2026
16w ago
Press Release
NEUTRAL ★ 1/10
$81.66 $81.64▼ −0.02%▼ −0.58%$99.18 (+21.45%)
Jun 16, 2026
19w ago
Court Ruling
BULLISH ★ 4/10
$83.11 $82.81▼ −0.36%▲ +0.28%$99.18 (+19.34%)
May 8, 2026
24w ago
8-K
BEARISH ★ 5/10
$80.55 $80.00▲ +0.68%▲ +2.15%$99.18 (−23.13%)
May 7, 2026
24w ago
Press Release
BEARISH ★ 6/10
$80.55 $80.00▲ +0.68%▲ +2.15%$99.18 (−23.13%)
Showing 10 of 14

US Market Status

Market Closed — Opens Wed (11h 57m)

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Report published Oct 7, 2026