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SC 13D ·Filed Sep 25, 2026

RWT

REDWOOD TRUST INC
BULLISH
Impact 6/10
Horizonweeks Processed1mo ago SEC0000904853-26-000006
Activist investor acquires 5%+ stake
Actionable Insight ▲ Bullish

Watch for potential board representation demands or strategic review proposals from Amster, given the 9% stake and activist 13D filing structure. The accelerated buying in September at declining prices ($3.58-$4.09) suggests conviction. Monitor for any follow-up 13D amendments or public letters to management.

DirectionBullish
Confidencemedium
Horizonweeks
Latest settled — T+20d
RWT ▼ -14.52% at T+20d
LONG call ✗ call lost -14.52% · α vs SPY -13.04% · entry $3.72 → $3.18
Next anchor: T+60d in 8w
Entry = T+0 close
Sep 25, 2026
via day close
T+1d
-0.81%
call -0.81% · α -0.06%
$3.69
settled 29d ago
T+5d
-5.11%
call -5.11% · α -4.89%
$3.53
settled 25d ago
T+20d
-14.52%
call -14.52% · α -13.04%
$3.18
settled 4d ago
T+60d
Pending
in 8w

Price Chart

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Executive Summary

Howard Amster filed a Schedule 13D disclosing beneficial ownership of 11,269,634 shares of Redwood Trust Inc. (RWT), representing 9.0% of the outstanding common stock. The filing indicates an aggregate investment of approximately $46 million, with purchases accelerating in September 2026 at declining prices, including a large block of 2 million shares at $3.58 on September 10. While the filing states an investment purpose and no present plans for control changes, the 9% stake and activist filing structure suggest potential engagement with management.

Key Financial Metrics

Stake
9%
Stake Value
$46.0M
Investor
Howard Amster

Key Facts

  • Howard Amster and related entities own 11,269,634 shares (9.0% of outstanding) as of September 25, 2026
  • Total investment of approximately $46,005,443
  • Recent purchases include 2,000,000 shares at $3.58 on September 10 and 2,225,000 shares at $4.00 on September 18
  • Filing states investment purpose with no present plans for control changes, but reserves right to engage with management and board
  • Shares acquired through personal funds and working capital; positions held at RBC Capital Markets and Interactive Brokers

Financial Impact

9.0% stake valued at approximately $46 million; average cost basis around $4.08 per share

ownership concentrationshare priceactivist pressure

Risk Factors

  • Activist may push for changes that management resists, leading to proxy fight
  • Stock price decline since large purchases (bought at $3.58-$4.09) could pressure Amster to escalate
  • No specific demands stated yet; engagement could be passive despite 13D filing

Investment Themes

Real Estate

Documents Analyzed

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

DocumentAccession Number
SC 13D Filing (Primary)0000904853-26-000006
Document: 0000904853-26-000006-index.html0000904853-26-000006
Document: 0000904853-26-000006.txt0000904853-26-000006
12 reports for RWT
Performance horizon
60% Hit rate @ T+1 3 of 5 directional calls Went positive at some point 3 of 5 best @ T+20▲ +8.26%Sep 10, 2026
Filters
Rows
Reports for RWT — sortable, filterable
TypeNow
Oct 13, 2026
14d ago
8-K
NEUTRAL ★ 4/10
$2.95 $3.11▲ +5.42%▲ +5.14%$3.24 (+9.83%)
Oct 6, 2026
21d ago
SC 13G/A
BULLISH ★ 4/10
$3.44 $3.34▼ −2.91%▼ −2.67%$3.24 (−5.81%)
Sep 25, 2026
4w ago
SC 13D
BULLISH ★ 6/10
$3.72 $3.69▼ −0.81%▼ −0.06%$3.24 (−12.90%)
Sep 21, 2026
5w ago
Insider Cluster
BULLISH ★ 6/10
$4.11 $3.72▼ −9.49%▼ −8.77%$3.24 (−21.17%)
Sep 18, 2026
5w ago
Insider Cluster
BULLISH ★ 5/10
$4.04 $4.11▲ +1.73%▲ +1.75%$3.24 (−19.80%)
Sep 16, 2026
5w ago
Insider Cluster
BULLISH ★ 6/10
$3.89 $3.94▲ +1.29%▲ +0.15%$3.24 (−16.71%)
Sep 16, 2026
5w ago
SC 13G
NEUTRAL ★ 3/10
$3.89 $3.94▲ +1.29%▲ +0.15%$3.24 (−16.71%)
Sep 15, 2026
6w ago
Insider Cluster
NEUTRAL ★ 3/10
$3.91 $3.93▲ +0.51%▲ +0.19%$3.24 (−17.14%)
Sep 10, 2026
6w ago
8-K
BEARISH ★ 6/10
$3.63 $3.55▲ +2.20%▲ +3.06%$3.24 (+10.74%)
Jul 28, 2026
13w ago
8-K
MIXED ★ 6/10
$4.67 $4.68▲ +0.21%▲ +1.75%$3.24 (−30.62%)
Showing 10 of 12

US Market Status

Market Closed — Opens Wed (< 1m)

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Report published Sep 25, 2026