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6-K ·Filed May 12, 2026

CLLS

Cellectis S.A.
NEUTRAL
Impact 3/10
Horizonweeks Processed5mo ago SEC0001171843-26-003280
Notable filing: 6-K
Actionable Insight • Neutral

Monitor the EHA presentations on June 13 for detailed efficacy/safety data, particularly lasme-cel response rates in post-CD19 CAR-T patients. The Q4 2026 interim analysis is the next major catalyst for lasme-cel. No immediate trading action warranted.

DirectionNeutral
Confidencehigh
Horizonweeks
Final — all horizons settled through T+60d ⚠ clustered
CLLS ▼ -32.07% at T+60d
NEUTRAL call -32.07% · α vs SPY -36.45% · entry $3.96 → $2.69
Entry = T+0 close
May 12, 2026
via day close
T+1d
+0.51%
call +0.51% · α -0.07%
$3.98
settled 6mo ago
T+5d
-2.78%
call -2.78% · α -2.86%
$3.85
settled 5mo ago
T+20d
-19.70%
call -19.70% · α -17.97%
$3.18
settled 5mo ago
T+60d
-32.07%
call -32.07% · α -36.45%
$2.69
settled 3mo ago

Price Chart

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Executive Summary

Cellectis announced upcoming presentations of Phase 1 data for lasme-cel (BALLI-01) and eti-cel (NATHALI-01) at the EHA 2026 annual congress in June. The lasme-cel abstract was selected for an oral presentation, highlighting promising safety and response rates in heavily pretreated r/r B-ALL patients, and the pivotal Phase 2 trial is recruiting with interim data expected in Q4 2026. This is a routine clinical update with no new financial data or material changes to the company's outlook.

Key Facts

  • Lasme-cel Phase 1 BALLI-01 data selected for oral presentation at EHA 2026 (June 11-14, Stockholm)
  • Pivotal Phase 2 BALLI-01 trial recruiting; first interim analysis expected Q4 2026
  • Eti-cel Phase 1 NATHALI-01 abstract accepted for poster presentation; Phase 1 data planned for Q4 2026
  • No financial results, guidance, or material agreements disclosed

Financial Impact

No financial figures disclosed; pre-revenue clinical-stage biotech

Risk Factors

  • Phase 1 data may not predict Phase 2 or registrational outcomes
  • Competition from approved CD19 CAR-Ts and other allogeneic programs
  • Cash runway and financing risk not addressed in this filing

Market Snapshot

Exchange
Nasdaq
Sector
Biological Products, (No Diagnostic Substances)
Analyst Consensus
85% bullish (13 analysts)

Investment Themes

Documents Analyzed

This report is based on 5 SEC documents filed with EDGAR.

DocumentAccession Number
6-K Filing (Primary)0001171843-26-003280
Document: f6k_051226.htm0001171843-26-003280
Document: 0001171843-26-003280-index-headers.html0001171843-26-003280
Document: 0001171843-26-003280-index.html0001171843-26-003280
Document: 0001171843-26-003280.txt0001171843-26-003280
14 reports for CLLS
Performance horizon
40% Hit rate @ T+60 2 of 5 directional calls Went positive at some point 4 of 6 best @ T+20▲ +35.52%Sep 14, 2026
Filters
Rows
Reports for CLLS — sortable, filterable
TypeNow
Sep 14, 2026
6w ago
6-K
BEARISH ★ 6/10
$1.83awaiting T+60—$0.9901 (+45.90%)
Sep 11, 2026
6w ago
Press Release
NEUTRAL ★ 2/10
$1.83awaiting T+60—$0.9901 (−45.90%)
Aug 6, 2026
11w ago
Press Release
MIXED ★ 5/10
$2.84awaiting T+60—$0.9901 (−65.08%)
Jun 29, 2026
17w ago
Court Ruling
BULLISH ★ 6/10
$3.00 $1.43▼ −52.33%▼ −55.32%$0.9901 (−67.00%)
Jun 25, 2026
17w ago
6-K
NEUTRAL ★ 2/10
$2.83 $1.51▼ −46.64%▼ −52.75%$0.9901 (−65.01%)
Jun 25, 2026
17w ago
6-K
NEUTRAL ★ 4/10
$2.83 $1.51▼ −46.64%▼ −52.75%$0.9901 (−65.01%)
Jun 11, 2026
19w ago
Press Release
BULLISH ★ 7/10
$3.09 $3.24▲ +4.85%▲ +0.46%$0.9901 (−67.96%)
Jun 9, 2026
19w ago
6-K
BULLISH ★ 7/10
$3.18 $3.32▲ +4.40%▼ −2.18%$0.9901 (−68.86%)
May 12, 2026
24w ago
6-K
NEUTRAL ★ 3/10
$3.96 $2.69▼ −32.07%▼ −36.45%$0.9901 (−75.00%)
May 4, 2026
25w ago
6-K
NEUTRAL ★ 2/10
$3.76 $2.85▼ −24.20%▼ −26.94%$0.9901 (−73.67%)
Showing 10 of 14

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Report published May 12, 2026