Constellium Se (CSTM) Stock Analysis & Price (Updated Oct 16, 2026, 4:00 PM ET)

• Closed at $25.47, +0.00% vs the prior close of $25.47. Day range $25.36–$26.28, opened at $25.57.
• Volume was 1.17M shares, 0.8x its 50-day average of 1.46M.
• Price is -3.7% vs its 50-day average ($26.44) and -8.2% vs its 200-day average ($27.75).
• 52-week range $14.62–$36.99; today's close sits at 49% of that range, 31.1% below the 52-week high.

• Closed at $25.47, +0.39% vs the prior close of $25.37. Day range $24.62–$25.61, opened at $25.00.
• Volume was 1.18M shares, 0.8x its 50-day average of 1.47M.
• Price is -3.9% vs its 50-day average ($26.51) and -8.1% vs its 200-day average ($27.72).
• 52-week range $14.62–$36.99; today's close sits at 49% of that range, 31.1% below the 52-week high.

• Closed at $25.37, -1.55% vs the prior close of $25.77. Day range $24.88–$25.51, opened at $25.17.
• Volume was 1.48M shares, 1.0x its 50-day average of 1.47M.
• Price is -4.6% vs its 50-day average ($26.59) and -8.4% vs its 200-day average ($27.68).
• 52-week range $14.62–$36.99; today's close sits at 48% of that range, 31.4% below the 52-week high.

• Closed at $25.77, +1.06% vs the prior close of $25.50. Day range $25.25–$25.83, opened at $25.43.
• Volume was 795.00K shares, 0.5x its 50-day average of 1.50M — lighter than usual.
• Price is -3.4% vs its 50-day average ($26.68) and -6.8% vs its 200-day average ($27.65).
• 52-week range $14.45–$36.99; today's close sits at 50% of that range, 30.3% below the 52-week high.

• Closed at $25.50, -1.20% vs the prior close of $25.81. Day range $25.33–$25.81, opened at $25.56.
• Volume was 1.02M shares, 0.7x its 50-day average of 1.52M.
• Price is -4.6% vs its 50-day average ($26.73) and -7.7% vs its 200-day average ($27.62).
• 52-week range $14.39–$36.99; today's close sits at 49% of that range, 31.1% below the 52-week high.

• Closed at $25.81, +0.82% vs the prior close of $25.60. Day range $25.64–$26.11, opened at $25.98.
• Volume was 1.28M shares, 0.8x its 50-day average of 1.53M.
• Price is -3.6% vs its 50-day average ($26.77) and -6.4% vs its 200-day average ($27.59).
• 52-week range $14.39–$36.99; today's close sits at 51% of that range, 30.2% below the 52-week high.

• Closed at $25.60, +0.71% vs the prior close of $25.42. Day range $25.01–$25.91, opened at $25.21.
• Volume was 1.38M shares, 0.9x its 50-day average of 1.55M.
• Price is -4.6% vs its 50-day average ($26.83) and -7.1% vs its 200-day average ($27.55).
• 52-week range $14.39–$36.99; today's close sits at 50% of that range, 30.8% below the 52-week high.

• Closed at $25.42, -0.31% vs the prior close of $25.50. Day range $24.93–$25.59, opened at $25.22.
• Volume was 1.34M shares, 0.9x its 50-day average of 1.56M.
• Price is -5.4% vs its 50-day average ($26.87) and -7.6% vs its 200-day average ($27.52).
• 52-week range $14.39–$36.99; today's close sits at 49% of that range, 31.3% below the 52-week high.

• Closed at $25.50, +0.83% vs the prior close of $25.29. Day range $25.26–$25.62, opened at $25.61.
• Volume was 870.90K shares, 0.6x its 50-day average of 1.58M — lighter than usual.
• Price is -5.4% vs its 50-day average ($26.94) and -7.2% vs its 200-day average ($27.48).
• 52-week range $14.39–$36.99; today's close sits at 49% of that range, 31.1% below the 52-week high.

• Closed at $25.29, +3.65% vs the prior close of $24.40. Day range $24.38–$25.73, opened at $24.42.
• Volume was 1.84M shares, 1.2x its 50-day average of 1.57M.
• Price is -6.4% vs its 50-day average ($27.02) and -7.8% vs its 200-day average ($27.44).
• 52-week range $14.39–$36.99; today's close sits at 48% of that range, 31.6% below the 52-week high.

• Closed at $24.40, -1.05% vs the prior close of $24.66. Day range $24.05–$25.13, opened at $24.95.
• Volume was 2.81M shares, 1.8x its 50-day average of 1.56M — unusually heavy trading.
• Price is -10.0% vs its 50-day average ($27.10) and -11.0% vs its 200-day average ($27.41).
• 52-week range $14.39–$36.99; today's close sits at 44% of that range, 34.0% below the 52-week high.

Update to a passive 5%+ stake (13G)

Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.

Source: SEC EDGAR filing 0000315066-26-001952

Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings

• Deslarzes Jean-Christophe bought 1,490 shares at $27.24 (≈$40.59K) on Aug 3, 2026
• Deslarzes Jean-Christophe bought 1,490 shares at $27.24 (≈$40.59K) on Aug 3, 2026
• Deslarzes Jean-Christophe bought 1,490 shares at $27.24 (≈$40.59K) on Aug 3, 2026
• Deslarzes Jean-Christophe bought 1,490 shares at $27.24 (≈$40.59K) on Aug 3, 2026

Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.

Source: SEC EDGAR filing 0001563411-26-000194

Quarterly report (unaudited financial statements for the quarter)

Key figures from this report aren't in the SEC's structured data yet (usually appears within a day or two).

Source: SEC EDGAR filing 0001563411-26-000192

Current report — a filing companies must make within 4 business days of a major event

• Item 2.02 — Reported results of operations (earnings release).

This is a results-day filing: the earnings press release is attached as an exhibit.

Source: SEC EDGAR filing 0001563411-26-000190

Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings

Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).

Source: SEC EDGAR filing 0001563411-26-000184

S-3ASR filing

An offering document: new shares or debt may be sold, which can increase the share count (dilution) or debt load. Size and terms are in the prospectus.

Source: SEC EDGAR filing 0001563411-26-000183