SEC Filings for Telecom and Internet Infrastructure

This page and its derivatives are designed for quick browsing of SEC filings for companies either in or related to the telecom and internet infrastructure sectors. Email any suggestions or bug reports to the webmaster.

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Quarterly Reports

Ownership (Form 3/4)

AT&T	8-K	06-16-26
Ericsson	6-K	06-16-26
Corning	11-K	06-15-26
Corning	11-K	06-15-26
Vodafone	FWP	06-15-26
Cogent	8-K	06-15-26
Ericsson	6-K	06-15-26
Vodafone	424B2	06-15-26
Comcast	8-K	06-12-26
CenturyLink	CERT	06-12-26
CenturyLink	8-A12B	06-11-26
IDT	8-K	06-11-26
CenturyLink	8-K	06-11-26
Primus	8-K	06-11-26
Ciena	8-K	06-11-26
CenturyLink	8-K	06-10-26
Vodafone	6-K	06-10-26
IDT	10-Q	06-09-26
KDDI	SCHEDULE 13D	06-09-26
Ciena	8-K	06-08-26

IDT	10-Q	06-09-26
Ciena	10-Q	06-04-26
8x8	10-K	05-22-26
Cisco	10-Q	05-19-26
Primus	10-Q	05-14-26
Cincinnati Bell	10-Q	05-13-26
Akamai	10-Q	05-08-26
Clearfield	10-Q	05-07-26
CenturyLink	10-Q	05-05-26
ADTRAN	10-Q	05-05-26
Cogent	10-Q	05-04-26
Digital Realty	10-Q	05-01-26
Corning	10-Q	05-01-26
Verizon	10-Q	05-01-26
Apple	10-Q	05-01-26
Equinix	10-Q	04-29-26
MetroPCS	10-Q	04-28-26
AT&T	10-Q	04-27-26
Charter	10-Q	04-24-26
Comcast	10-Q	04-23-26

Cisco	4	06-16-26
Cisco	4	06-16-26
Cisco	4	06-16-26
8x8	4	06-16-26
8x8	4	06-16-26
8x8	4	06-16-26
8x8	4	06-16-26
8x8	4	06-16-26
Cisco	144	06-16-26
Cogent	4	06-16-26
Cogent	144	06-16-26
Ciena	144	06-15-26
Cogent	4	06-15-26
Akamai	4	06-15-26
Ciena	144	06-15-26
IDT	4	06-15-26
MetroPCS	4	06-12-26
Cisco	4	06-11-26
Cisco	4	06-11-26
Cisco	4	06-11-26

I do not include the option of listing hundreds of filings on a page because a) this is intended for quick access rather than in depth searching, and b) because in the case of viewing ‘All’ companies, it uses up too many server resources. When viewing filings for the whole sector, there is no link to the SEC site because there is no comparable page there. Actually, viewing the most recent filings for the sector at a glance is one of the main things I simply couldn’t do at the SEC site and therefore drove me to write my own tool.

Filings are cached for approximately an hour, and refreshed automatically. The sector-wide filings view can be slow during such an update. I’m working on it.

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