James Bubeck

Insider

First SEC filing: Oct. 1, 2015 · Latest: Oct. 1, 2015

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Initial holdings The stakes this person held when they first started reporting.

Insider at

CCOI selling June 4, 2025

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 8 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

8 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 4, 2025	CCOI	S	2,000	$47.50	$95,000	55,142 Direct	-3.50%	Disposed	-79.2% (price as of 2026-08-21)
March 4, 2025	CCOI	S	2,000	$71.67	$143,340	57,142 Direct	-3.38%	Disposed	-86.2% (price as of 2026-08-21)
Jan. 9, 2025	CCOI	A	9,600	—	—	59,142 Direct	+19.38%	Acquired	(price as of 2026-08-21)
Dec. 9, 2024	CCOI	S	1,920	$76.60	$147,072	49,542 Direct	-3.73%	Disposed	-87.1% (price as of 2026-08-21)
Dec. 2, 2024	CCOI	S	1,920	$81.42	$156,326	51,462 Direct	-3.60%	Disposed	-87.9% (price as of 2026-08-21)
Dec. 1, 2024	CCOI	A	2,400	—	—	53,382 Direct	+4.71%	Acquired	(price as of 2026-08-21)
Sept. 4, 2024	CCOI	S 10b5-1	1,920	$69.77	$133,958	50,982 Direct	-3.63%	Disposed	-85.9% (price as of 2026-08-21)
June 3, 2024	CCOI	S 10b5-1	1,920	$58.97	$113,222	52,902 Direct	-3.50%	Disposed	-83.3% (price as of 2026-08-21)
March 1, 2024	CCOI	S 10b5-1	1,920	$76.62	$147,110	54,822 Direct	-3.38%	Disposed	-87.1% (price as of 2026-08-21)
Jan. 3, 2024	CCOI	A	9,600	—	—	46,742 Direct	+25.85%	Acquired	(price as of 2026-08-21)
Jan. 3, 2024	CCOI	A	10,000	—	—	56,742 Direct	+21.39%	Acquired	(price as of 2026-08-21)
Dec. 5, 2023	CCOI	S	1,920	$66.12	$126,950	37,142 Direct	-4.92%	Disposed	-85.1% (price as of 2026-08-21)
Dec. 1, 2023	CCOI	S 10b5-1	1,920	$63.70	$122,304	39,062 Direct	-4.68%	Disposed	-84.5% (price as of 2026-08-21)
Dec. 1, 2023	CCOI	A 10b5-1	2,400	—	—	40,982 Direct	+6.22%	Acquired	(price as of 2026-08-21)
Sept. 1, 2023	CCOI	S 10b5-1	1,920	$70.96	$136,243	38,582 Direct	-4.74%	Disposed	-86.1% (price as of 2026-08-21)
June 1, 2023	CCOI	S 10b5-1	1,920	$61.07	$117,254	40,502 Direct	-4.53%	Disposed	-83.8% (price as of 2026-08-21)
May 11, 2018	CCOI	S	2,000	$50.36	$100,720	33,542 Direct	-5.63%	Disposed	-80.4% (price as of 2026-08-21)
March 2, 2018	CCOI	S	300	$43.00	$12,900	35,542 Direct	-0.84%	Disposed	-77.0% (price as of 2026-08-21)
Feb. 21, 2018	CCOI	A	9,600	—	—	35,842 Direct	+36.58%	Acquired	(price as of 2026-08-21)
Dec. 1, 2017	CCOI	S	250	$46.66	$11,665	26,242 Direct	-0.94%	Disposed	-78.8% (price as of 2026-08-21)
Aug. 11, 2017	CCOI	S	500	$43.56	$21,780	26,492 Direct	-1.85%	Disposed	-77.3% (price as of 2026-08-21)
June 1, 2017	CCOI	S	300	$39.87	$11,961	26,992 Direct	-1.10%	Disposed	-75.2% (price as of 2026-08-21)
May 3, 2017	CCOI	A	9,600	—	—	27,292 Direct	+54.26%	Acquired	(price as of 2026-08-21)
March 17, 2017	CCOI	S	100	$41.88	$4,188	17,692 Direct	-0.56%	Disposed	-76.4% (price as of 2026-08-21)
March 1, 2017	CCOI	S	300	$41.62	$12,486	17,792 Direct	-1.66%	Disposed	-76.3% (price as of 2026-08-21)
Nov. 9, 2016	CCOI	S	800	$39.76	$31,808	18,092 Direct	-4.23%	Disposed	-75.2% (price as of 2026-08-21)
Aug. 25, 2016	CCOI	S	233	$36.26	$8,449	18,892 Direct	-1.22%	Disposed	-72.8% (price as of 2026-08-21)
May 4, 2016	CCOI	A	12,000	—	—	19,125 Direct	+168.42%	Acquired	(price as of 2026-08-21)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Initial ownership (Form 3) 1 holding

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
Oct. 1, 2015	CCOI	common stock	—	Direct