Telephone & Telegraph Apparatus
Standard Industrial Classification: SIC 3661
Industry Insider Sentiment Analysis
The Telephone & Telegraph Apparatus sector (SIC 3661) 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-05-22 21:00 | 2026-05-22 | FN | Fabrinet | Bahrami Homa | Director | SELL | $711.91 | 2,500 | $1,779,775 | 16,233 |
| 2026-05-22 20:02 | 2026-05-20 | ADTN | ADTRAN Holdings, Inc. | Wilson James Denson Jr | Officer | SELL | $14.72 | 9,332 | $137,367 | 143,277 |
| 2026-05-19 22:35 | 2026-05-15 | CIEN | CIENA CORP | SMITH GARY B | Director, Officer | SELL | $562.05 | 2,952 | $1,659,175 | 272,509 |
| 2026-05-19 22:29 | 2026-05-15 | CIEN | CIENA CORP | Rothenstein David M | Officer | SELL | $562.39 | 2,500 | $1,405,969 | 190,081 |
| 2026-05-19 22:10 | 2026-05-15 | CIEN | CIENA CORP | Gage Brodie | Officer | SELL | $570.65 | 1,200 | $684,780 | 43,941 |
| 2026-05-12 20:23 | 2026-05-08 | CLFD | Clearfield, Inc. | Beranek Cheryl | Director, Officer | SELL | $41.85 | 7,500 | $313,900 | 504,541 |
| 2026-05-12 15:59 | 2026-05-11 | CLFD | Clearfield, Inc. | Jones Walter Louis JR | Director | SELL | $46.05 | 2,391 | $110,106 | 8,682 |
| 2026-05-11 20:00 | 2026-05-07 | ADTN | ADTRAN Holdings, Inc. | Glingener Christoph | Officer | OPT+S | $14.96 | 148,392 | $2,219,840 | 46,645 |
| 2026-05-11 10:56 | 2026-05-08 | AUDC | AUDIOCODES LTD | Baruch Niran | Officer | SELL | $8.34 | 1,875 | $15,642 | 105,000 |
| 2026-05-11 10:58 | 2026-05-08 | AUDC | AUDIOCODES LTD | Aldema Lior | Officer | SELL | $8.34 | 2,813 | $23,459 | 112,501 |
| 2026-05-07 10:35 | 2026-05-05 | AUDC | AUDIOCODES LTD | Baruch Niran | Officer | SELL | $8.54 | 3,750 | $32,039 | 106,875 |
| 2026-05-07 10:28 | 2026-05-05 | AUDC | AUDIOCODES LTD | Aldema Lior | Officer | SELL | $8.54 | 5,626 | $48,069 | 115,314 |
| 2026-05-04 22:04 | 2026-05-01 | CIEN | CIENA CORP | SMITH GARY B | Director, Officer | SELL | $537.74 | 2,952 | $1,587,415 | 275,461 |
| 2026-05-04 20:30 | 2026-05-01 | NTGR | NETGEAR, INC. | Badjate Pramod | Officer | SELL | $25.47 | 3,000 | $76,410 | 165,513 |
| 2026-04-29 11:36 | 2026-04-28 | AUDC | AUDIOCODES LTD | Baruch Niran | Officer | SELL | $8.71 | 1,875 | $16,330 | 80,625 |
| 2026-04-29 11:27 | 2026-04-28 | AUDC | AUDIOCODES LTD | Aldema Lior | Officer | SELL | $8.71 | 2,813 | $24,502 | 75,940 |
| 2026-04-17 19:23 | 2026-04-15 | CIEN | CIENA CORP | Rothenstein David M | Officer | SELL | $467.65 | 2,500 | $1,169,134 | 192,581 |
| 2026-04-17 19:29 | 2026-04-15 | CIEN | CIENA CORP | SMITH GARY B | Director, Officer | SELL | $467.47 | 2,952 | $1,379,976 | 278,413 |
| 2026-04-17 19:08 | 2026-04-15 | CIEN | CIENA CORP | Gage Brodie | Officer | SELL | $471.79 | 1,200 | $566,148 | 45,141 |
| 2026-04-16 14:52 | 2026-04-15 | CIEN | CIENA CORP | DiPerna Dino | Officer | SELL | $471.79 | 2,829 | $1,334,694 | 42,460 |
| 2026-04-03 23:46 | 2026-04-01 | CIEN | CIENA CORP | Phipps Jason | Officer | SELL | $409.80 | 22,014 | $9,021,271 | 67,377 |
| 2026-04-03 18:04 | 2026-04-01 | CIEN | CIENA CORP | Kosaraju Sheela | Officer | SELL | $401.71 | 2,012 | $808,241 | 92,107 |
| 2026-04-03 17:43 | 2026-04-01 | CIEN | CIENA CORP | SMITH GARY B | Director, Officer | SELL | $415.51 | 2,952 | $1,226,590 | 281,365 |
| 2026-03-31 20:12 | 2026-03-27 | CIEN | CIENA CORP | Cumello Joseph | Officer | SELL | $394.82 | 1,773 | $700,016 | 46,175 |
| 2026-03-25 22:43 | 2026-03-24 | CIEN | CIENA CORP | Gage Brodie | Officer | SELL | $405.00 | 5,000 | $2,025,000 | 46,341 |
| 2026-03-18 20:43 | 2026-03-16 | CIEN | CIENA CORP | SMITH GARY B | Director, Officer | SELL | $359.53 | 2,952 | $1,061,325 | 293,084 |
| 2026-03-18 20:34 | 2026-03-16 | CIEN | CIENA CORP | Rothenstein David M | Officer | SELL | $345.00 | 2,500 | $862,500 | 197,194 |
| 2026-03-06 14:02 | 2026-03-02 | CLRO | CLEARONE INC | First Finance Ltd. | 10% owner | BUY | $4.00 | 437,500 | $1,750,000 | 1,641,162 |
| 2026-03-06 00:10 | 2026-03-04 | ADTN | Adtran Holdings, Inc. | Jacqueline Hourigan Rice | Director | SELL | $10.29 | 14,406 | $148,238 | 13,809 |
| 2026-03-04 23:15 | 2026-03-02 | CIEN | CIENA CORP | SMITH GARY B | Director, Officer | SELL | $354.64 | 2,952 | $1,046,893 | 296,036 |
| 2026-02-28 00:20 | 2026-02-25 | FN | Fabrinet | KELLY THOMAS F | Director | SELL | $623.85 | 1,850 | $1,154,131 | 17,331 |
| 2026-02-20 20:34 | 2026-02-19 | CLFD | Clearfield, Inc. | Hayward Donald R. | Director | SELL | $32.00 | 3,595 | $115,040 | 10,870 |
| 2026-02-19 19:14 | 2026-02-17 | CIEN | CIENA CORP | Rothenstein David M | Officer | SELL | $300.20 | 2,500 | $750,498 | 199,694 |
| 2026-02-19 19:01 | 2026-02-17 | CIEN | CIENA CORP | SMITH GARY B | Director, Officer | SELL | $299.51 | 2,952 | $884,157 | 298,988 |
| 2026-02-13 00:12 | 2026-02-10 | FIEE | FiEE, Inc. | Elements Corporate Services Ltd | 10% owner | BUY | $1.29 | 2,138,181 | $2,758,253 | 3,119,830 |
| 2026-02-04 22:13 | 2026-02-02 | CIEN | CIENA CORP | SMITH GARY B | Director, Officer | SELL | $265.60 | 2,952 | $784,057 | 301,940 |
| 2026-02-04 04:26 | 2026-02-02 | NTGR | NETGEAR, INC. | Badjate Pramod | Officer | SELL | $20.97 | 3,000 | $62,910 | 144,586 |
| 2026-01-20 21:56 | 2026-01-15 | CIEN | CIENA CORP | Kosaraju Sheela | Officer | SELL | $246.23 | 382 | $94,060 | 96,131 |
| 2026-01-20 18:49 | 2026-01-15 | CIEN | CIENA CORP | Phipps Jason | Officer | SELL | $247.89 | 21,383 | $5,300,621 | 91,765 |
| 2026-01-20 18:51 | 2026-01-15 | CIEN | CIENA CORP | SMITH GARY B | Director, Officer | SELL | $247.65 | 2,993 | $741,209 | 304,892 |
| 2026-01-16 22:32 | 2026-01-15 | CIEN | CIENA CORP | DiPerna Dino | Officer | SELL | $246.23 | 5,054 | $1,244,446 | 47,341 |
| 2026-01-14 00:40 | 2026-01-12 | CIEN | CIENA CORP | Cumello Joseph | Officer | SELL | $229.82 | 11,929 | $2,741,531 | 49,475 |
| 2026-01-14 01:26 | 2026-01-09 | CIEN | CIENA CORP | Rothenstein David M | Officer | SELL | $219.28 | 2,500 | $548,200 | 202,194 |
| 2026-01-14 00:51 | 2026-01-12 | CIEN | CIENA CORP | GALLAGHER PATRICK | Director | SELL | $227.45 | 11,618 | $2,642,486 | 50,184 |
| 2026-01-06 22:51 | 2026-01-02 | CIEN | CIENA CORP | Kosaraju Sheela | Officer | SELL | $241.00 | 1,748 | $421,268 | 96,513 |
| 2026-01-07 02:24 | 2026-01-05 | CIEN | CIENA CORP | SMITH GARY B | Director, Officer | SELL | $229.44 | 83,552 | $19,170,163 | 307,885 |
| 2025-12-29 18:18 | 2025-12-22 | CIEN | CIENA CORP | SMITH GARY B | Director, Officer | SELL | $233.46 | 6,800 | $1,587,543 | 391,437 |
| 2025-12-18 19:41 | 2025-10-01 | CIEN | CIENA CORP | Phipps Jason | Officer | SELL | $143.42 | 1,984 | $284,545 | 80,244 |
| 2025-12-17 22:45 | 2025-12-15 | CIEN | CIENA CORP | NEVENS THOMAS MICHAEL | Director | SELL | $224.66 | 8,554 | $1,921,742 | 9,422 |
| 2025-12-16 22:26 | 2025-12-15 | CIEN | CIENA CORP | Gage Brodie | Officer | SELL | $220.84 | 550 | $121,462 | 39,992 |
Sector-Wide Insider Alpha
Analyzing insider movements across the Telephone & Telegraph Apparatus sector provides a macro-view of executive conviction. When multiple leaders in different companies within the same SIC code (3661) simultaneously buy shares, it often indicates an industry-wide undervaluation or a positive shift in market cycles.
SEC Filings in Telephone & Telegraph Apparatus
Every transaction in the Telephone & Telegraph Apparatus 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.