Primary Production of Aluminum
Standard Industrial Classification: SIC 3334
Industry Insider Sentiment Analysis
The Primary Production of Aluminum sector (SIC 3334) acts as a critical barometer for broader economic health. Our real-time monitoring reveals total transactions. Monitoring "cluster buying" is one of the most reliable leading indicators for future sector performance. By analyzing aggregate data across this specific Standard Industrial Classification, investors can filter out individual company volatility and identify high-conviction trends. When multiple directors and officers within the same industry move capital simultaneously, it often signals an upcoming sector-wide revaluation or a fundamental shift in supply chain dynamics that has yet to be recognized by the broader public market.
| Filing Date | Trade Date | Ticker | Company | Reporting Person | Relationship | Type | Price | Qty | Total, $ | Owned After |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-03-27 21:43 | 2026-03-25 | CENX | CENTURY ALUMINUM CO | Trpkovski Peter A | Officer | SELL | $50.51 | 16,739 | $845,487 | 64,125 |
| 2026-03-17 21:35 | 2026-03-16 | CENX | CENTURY ALUMINUM CO | Gary Jesse E | Director, Officer | SELL | $55.47 | 150,000 | $8,320,500 | 142,580 |
| 2026-03-13 21:08 | 2026-03-11 | CENX | CENTURY ALUMINUM CO | Hoffman Robert F | Officer | SELL | $56.51 | 10,529 | $594,994 | 56,643 |
| 2026-03-13 21:14 | 2026-03-12 | CENX | CENTURY ALUMINUM CO | Calloway Kenneth L | Officer | SELL | $58.00 | 18,000 | $1,044,000 | 24,902 |
| 2026-03-07 01:58 | 2026-03-04 | CENX | CENTURY ALUMINUM CO | Hoffman Robert F | Officer | SELL | $56.33 | 10,000 | $563,300 | 67,172 |
| 2026-03-05 00:53 | 2026-03-04 | CENX | CENTURY ALUMINUM CO | GLENCORE INTERNATIONAL AG | 10% owner | SELL | $51.75 | 6,315,245 | $326,813,929 | 12,184,755 |
| 2026-03-05 02:35 | 2026-03-02 | CENX | CENTURY ALUMINUM CO | Aboud Matt | Officer | SELL | $52.53 | 15,097 | $793,098 | 64,843 |
| 2026-03-04 00:56 | 2026-02-27 | CENX | CENTURY ALUMINUM CO | Hafberg Agust F | Officer | SELL | $51.24 | 22,884 | $1,172,576 | 45,059 |
| 2026-02-28 01:07 | 2026-02-25 | CENX | CENTURY ALUMINUM CO | Gudlaugsson Gunnar | Officer | SELL | $54.10 | 43,000 | $2,326,300 | 136,393 |
| 2026-02-26 02:04 | 2026-02-23 | CENX | CENTURY ALUMINUM CO | DeZee John | Officer | SELL | $50.72 | 66,000 | $3,347,520 | 97,647 |
| 2026-01-24 03:17 | 2026-01-23 | CENX | CENTURY ALUMINUM CO | Gary Jesse E | Director, Officer | SELL | $48.19 | 150,000 | $7,228,500 | 292,580 |
| 2025-11-14 01:59 | 2025-11-10 | CENX | CENTURY ALUMINUM CO | GLENCORE INTERNATIONAL AG | 10% owner | SELL | $30.25 | 9,000,000 | $272,250,000 | 18,500,000 |
| 2025-09-30 23:26 | 2025-09-26 | CENX | CENTURY ALUMINUM CO | Hafberg Agust F | Officer | SELL | $27.91 | 9,493 | $264,950 | 55,260 |
| 2025-09-23 23:03 | 2025-09-19 | CENX | CENTURY ALUMINUM CO | Calloway Kenneth L | Officer | SELL | $27.50 | 16,450 | $452,375 | 28,706 |
| 2025-08-14 23:36 | 2025-08-12 | CENX | CENTURY ALUMINUM CO | Aboud Matt | Officer | SELL | $23.27 | 12,027 | $279,868 | 62,589 |
| 2025-03-25 00:29 | 2025-03-20 | CENX | CENTURY ALUMINUM CO | Hoffman Robert F | Officer | SELL | $20.24 | 5,000 | $101,200 | 59,083 |
| 2025-03-19 01:10 | 2025-03-14 | CENX | CENTURY ALUMINUM CO | Hoffman Robert F | Officer | SELL | $19.99 | 2,500 | $49,975 | 64,083 |
| 2024-12-31 01:56 | 2024-12-26 | CENX | CENTURY ALUMINUM CO | Gary Jesse E | Director, Officer | SELL | $18.66 | 79,243 | $1,478,738 | 753 |
| 2024-12-10 00:40 | 2024-12-05 | CENX | CENTURY ALUMINUM CO | Gudlaugsson Gunnar | Officer | SELL | $23.85 | 20,000 | $477,000 | 107,932 |
| 2024-10-24 14:48 | 2024-10-22 | AA | Alcoa Corp | Bacchi Renato | Officer | SELL | $42.29 | 23,867 | $1,009,431 | 57,317 |
| 2024-06-28 23:26 | 2024-06-26 | CENX | CENTURY ALUMINUM CO | Gary Jesse E | Director, Officer | SELL | $16.21 | 60,000 | $972,600 | 62,447 |
| 2024-03-15 23:09 | 2024-03-13 | AA | Alcoa Corp | Jones Tammi A | Officer | SELL | $30.77 | 27,908 | $858,746 | 9,265 |
| 2024-03-07 00:45 | 2024-03-04 | CENX | CENTURY ALUMINUM CO | Aboud Matt | Officer | SELL | $10.61 | 3,766 | $39,957 | 59,248 |
| 2024-01-03 00:55 | 2023-12-28 | CENX | CENTURY ALUMINUM CO | Trpkovski Peter A | Officer | SELL | $12.32 | 13,908 | $171,347 | 41,998 |
| 2023-12-29 01:45 | 2023-12-26 | CENX | CENTURY ALUMINUM CO | Gary Jesse E | Director, Officer | SELL | $12.59 | 138,162 | $1,740,137 | 76,443 |
| 2023-12-23 03:55 | 2023-12-20 | CENX | CENTURY ALUMINUM CO | Hoffman Robert F | Officer | SELL | $12.06 | 12,000 | $144,720 | 38,553 |
| 2023-05-15 23:25 | 2023-05-11 | CENX | CENTURY ALUMINUM CO | Aboud Matt | Officer | BUY | $7.25 | 18,000 | $130,500 | 46,678 |
| 2023-02-11 00:27 | 2023-02-08 | AA | Alcoa Corp | Harvey Roy Christopher | Director, Officer | SELL | $51.34 | 30,000 | $1,540,170 | 950,140 |
| 2023-02-03 16:02 | 2023-02-01 | AA | Alcoa Corp | Bacchi Renato | Officer | SELL | $53.50 | 10,000 | $535,000 | 59,567 |
| 2023-02-02 14:37 | 2023-01-31 | AA | Alcoa Corp | Elam Harden Sonya | Officer | SELL | $51.87 | 4,514 | $234,142 | 29,427 |
| 2023-01-31 15:58 | 2023-01-27 | AA | Alcoa Corp | Heeter Jeffrey D. | Officer | SELL | $51.21 | 40,130 | $2,055,057 | 37,840 |
| 2023-01-31 16:02 | 2023-01-27 | AA | Alcoa Corp | Oplinger William F | Officer | OPT+S | $53.04 | 134,444 | $7,130,263 | 71,560 |
| 2023-01-28 00:22 | 2023-01-25 | AA | Alcoa Corp | Jones Tammi A | Officer | SELL | $51.87 | 1,100 | $57,057 | 7,584 |
| 2023-01-28 00:20 | 2023-01-25 | AA | Alcoa Corp | Heeter Jeffrey D. | Officer | SELL | $51.95 | 16,668 | $865,843 | 77,970 |
| 2022-08-16 23:30 | 2022-08-12 | CENX | CENTURY ALUMINUM CO | Gary Jesse E | Director, Officer | SELL | $9.33 | 99,568 | $929,109 | 64,400 |
| 2022-03-22 23:44 | 2022-03-21 | CENX | CENTURY ALUMINUM CO | DeZee John | Officer | SELL | $27.64 | 15,287 | $422,548 | 45,484 |
| 2022-03-09 00:21 | 2022-03-04 | CENX | CENTURY ALUMINUM CO | Hoffman Robert F | Officer | SELL | $29.19 | 3,480 | $101,581 | 32,380 |
| 2022-03-02 00:25 | 2022-03-01 | CENX | CENTURY ALUMINUM CO | Conti Craig C | Officer | SELL | $25.69 | 12,920 | $331,902 | 117,018 |
| 2022-03-02 00:19 | 2022-02-28 | CENX | CENTURY ALUMINUM CO | Harrison Michelle | Officer | SELL | $23.22 | 16,284 | $378,152 | 65,965 |
| 2022-02-25 01:01 | 2022-02-24 | AA | Alcoa Corp | Slaven John D | Officer | OPT+S | $75.33 | 28,326 | $2,133,761 | 54,730 |
| 2022-02-23 00:38 | 2022-02-18 | AA | Alcoa Corp | Elam Harden Sonya | Officer | SELL | $78.19 | 1,317 | $102,970 | 33,484 |
| 2022-02-09 00:17 | 2022-02-04 | AA | Alcoa Corp | Slaven John D | Officer | OPT+S | $62.18 | 12,267 | $762,799 | 61,570 |
| 2022-02-09 00:14 | 2022-02-04 | AA | Alcoa Corp | Beerman Molly S. | Officer | SELL | $64.53 | 12,500 | $806,606 | 27,905 |
| 2022-02-05 00:22 | 2022-02-03 | AA | Alcoa Corp | Heeter Jeffrey D. | Officer | SELL | $60.56 | 17,696 | $1,071,672 | 54,730 |
| 2022-02-05 00:18 | 2022-02-02 | AA | Alcoa Corp | Kahrs Benjamin D | Officer | SELL | $59.04 | 15,376 | $907,727 | 21,310 |
| 2022-01-29 00:16 | 2022-01-26 | AA | Alcoa Corp | Jones Tammi A | Officer | OPT+S | $62.28 | 13,070 | $814,043 | 7,599 |
| 2022-01-29 00:14 | 2022-01-26 | AA | Alcoa Corp | Heeter Jeffrey D. | Officer | SELL | $63.05 | 8,332 | $525,344 | 72,426 |
| 2022-01-29 00:13 | 2022-01-26 | AA | Alcoa Corp | Harvey Roy Christopher | Director, Officer | OPT+S | $60.62 | 238,147 | $14,435,947 | 700,724 |
| 2022-01-27 00:16 | 2022-01-25 | AA | Alcoa Corp | Heeter Jeffrey D. | Officer | OPT+S | $60.31 | 29,440 | $1,775,518 | 56,472 |
| 2021-11-19 00:33 | 2021-11-16 | AA | Alcoa Corp | Oplinger William F | Officer | OPT+S | $48.40 | 166,369 | $8,051,611 | 93,190 |
Sector-Wide Insider Alpha
Analyzing insider movements across the Primary Production of Aluminum sector provides a macro-view of executive conviction. When multiple leaders in different companies within the same SIC code (3334) simultaneously buy shares, it often indicates an industry-wide undervaluation or a positive shift in market cycles.
SEC Filings in Primary Production of Aluminum
Every transaction in the Primary Production of Aluminum industry is reported via Form 4 disclosures. By filtering these filings by industry, investors can detect institutional-scale sentiment shifts before they are reflected in broader market indices, following the capital flow of those with intimate industry knowledge.
UNDERSTANDING THE DATA
FILING DATE: The date and time when the transaction was reported to the SEC. This is when the public first receives the information.
TRADE DATE: The actual day the insider executed the purchase or sale in the market.
INDUSTRY: The specific market sector the company operates in. Useful for identifying broader institutional capital flows across sectors.
OWNED AFTER: The total number of shares held by the insider following the transaction. This highlights the insider's remaining conviction in the company.
CHANGE %: The percentage increase or decrease of the insider's total position. Large percentage changes often carry more weight than the dollar amount alone.
TRADE TYPES DEFINITIONS
BUY: An open market purchase. Typically indicates an insider's belief that the stock is undervalued or poised for growth.
SELL: An open market sale. While often used for diversification or liquidity, large or unexpected sales can be a warning signal.
OPT+S (OPTION EXERCISE & SALE): This occurs when an insider exercises their stock options and sells them immediately. Often part of a structured compensation plan.