SecBot SecBot
SC 13D/A ·Filed Sep 23, 2026

RTB

RTB Digital, Inc.
NEUTRAL
Impact 4/10
Horizonweeks Processed1mo ago SEC0002146263-26-000006
Activist stake amendment (position change)
Actionable Insight • Neutral

The back-to-back 13D/A filings (Sept 21 and Sept 23) suggest the activist is actively managing his position disclosure in real time. The small incremental purchase (0.26% of shares outstanding) and unchanged 'investment purposes' language indicate no escalation. Monitor for any future 13D/A that adds board representation demands or strategic review language, which would signal a shift from passive accumulation to active engagement.

DirectionNeutral
Confidencemedium
Horizonweeks
Latest settled — T+20d ⚠ clustered
RTB ▼ -12.60% at T+20d
NEUTRAL call -12.60% · α vs SPY -13.29% · entry $9.84 → $8.60
Next anchor: T+60d in 7w
Latest observation: T+22 -2.52% FF3 residual α
Entry = T+0 close
Sep 23, 2026
via day close
T+1d
+4.88%
call +4.88% · α +4.96%
$10.32
settled 5w ago
T+5d
-9.96%
call -9.96% · α -9.28%
$8.86
settled 26d ago
T+20d
-12.60%
call -12.60% · α -13.29%
$8.60
settled 5d ago
T+60d
Pending
in 7w

Price Chart

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Executive Summary

Jason Christopher Dorsett filed an amended Schedule 13D on September 23, 2026, reporting a small open-market purchase of 11,000 shares at $8.32/share on September 21, 2026, increasing his beneficial ownership to 4,204,028 shares (30.0% of outstanding common stock). The filing states the shares were acquired for investment purposes with no new demands or changes in purpose, representing a modest stake increase rather than an escalation of activist pressure.

Key Financial Metrics

Stake
30%
Investor
Jason Christopher Dorsett

Key Facts

  • Jason Christopher Dorsett now beneficially owns 4,204,028 shares of RTB Digital common stock, representing approximately 30.0% of outstanding shares.
  • On September 21, 2026, Dorsett purchased 11,000 shares at $8.32 per share in an open-market transaction using $91,520 of personal funds.
  • The filing is an amendment to a prior Schedule 13D/A filed just 2 days earlier (September 21, 2026), indicating rapid sequential filings.
  • Dorsett has sole voting and dispositive power over all 4,204,028 shares, with no shared power.
  • The stated purpose remains investment purposes with no new demands, contracts, or arrangements disclosed.

Financial Impact

Purchase of 11,000 shares for $91,520 at $8.32/share; total stake value not calculable from filing alone (no current market price provided).

ownership percentageshare count

Risk Factors

  • The 30.0% ownership stake is just below the 33.33% threshold that could trigger Nevada control share acquisition statutes, potentially limiting further accumulation without shareholder approval.
  • Rapid sequential amendments may signal the activist is testing the company's response or preparing for a more aggressive stance.
  • The company's recent 10-K (filed April 2026) provides context for potential financial distress that could motivate activist demands.

Documents Analyzed

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

DocumentAccession Number
SC 13D/A Filing (Primary)0002146263-26-000006
Document: 0002146263-26-000006-index.html0002146263-26-000006
Document: 0002146263-26-000006.txt0002146263-26-000006
17 reports for RTB
Performance horizon
75% Hit rate @ T+5 3 of 4 directional calls Went positive at some point 4 of 4 best @ T+1▲ +13.15%Sep 18, 2026
Filters
Rows
Reports for RTB — sortable, filterable
TypeNow
Oct 6, 2026
20d ago
8-K
NEUTRAL ★ 4/10
$8.73 $7.62▼ −12.71%▼ −12.58%$7.50 (−14.09%)
Oct 2, 2026
24d ago
8-K
NEUTRAL ★ 4/10
$8.89 $8.09▼ −9.00%▼ −9.42%$7.50 (−15.64%)
Sep 23, 2026
4w ago
SC 13D/A
NEUTRAL ★ 4/10
$9.84 $8.86▼ −9.96%▼ −9.28%$7.50 (−23.78%)
Sep 23, 2026
4w ago
Insider Buy
BULLISH ★ 6/10
$9.84 $8.86▼ −9.96%▼ −9.28%$7.50 (−23.78%)
Sep 22, 2026
4w ago
8-K
BEARISH ★ 6/10
$9.84 $8.86▲ +9.96%▲ +9.28%$7.50 (+23.78%)
Sep 22, 2026
4w ago
8-K
NEUTRAL ★ 5/10
$9.55 $9.43▼ −1.26%▼ −0.07%$7.50 (−21.47%)
Sep 21, 2026
5w ago
SC 13D/A
NEUTRAL ★ 5/10
$8.44 $9.36▲ +10.90%▲ +11.92%$7.50 (−11.14%)
Sep 21, 2026
5w ago
Insider Buy
BULLISH ★ 5/10
$8.44 $9.36▲ +10.90%▲ +11.92%$7.50 (−11.14%)
Sep 18, 2026
5w ago
8-K
BULLISH ★ 7/10
$8.44 $9.36▲ +10.90%▲ +11.92%$7.50 (−11.14%)
Sep 18, 2026
5w ago
8-K
NEUTRAL ★ 3/10
$8.02 $10.27▲ +28.05%▲ +26.79%$7.50 (−6.48%)
Showing 10 of 17

US Market Status

Market Closed — Opens Tue (< 1m)

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Report published Sep 23, 2026