Nikos Theodosopoulos

Insider

First SEC filing: Sept. 25, 2023 · Latest: Sept. 25, 2023

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

Insider at

Insider transactions

1 buys (P) 0 sells (S) Net: $100,429 + 44 non-open-market transactions below Avg return of open purchases vs now: 0.9% 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

44 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Dec. 31, 2025	ADTN	A	13,809	—	—	65,963 Direct	+26.48%	Acquired	(price as of 2026-08-21)
Nov. 26, 2025	ADTN	P	12,859	$7.81	$100,429	52,154 Direct	+32.72%	Acquired	0.9% (price as of 2026-08-21)
Dec. 31, 2024	ADTN	A	14,406	—	—	39,295 Direct	+57.88%	Acquired	(price as of 2026-08-21)
Dec. 31, 2023	ADTN	M	168	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Dec. 31, 2023	ADTN	A	16,349	—	—	24,889 Direct	+191.44%	Acquired	(price as of 2026-08-21)
Dec. 31, 2023	ADTN	D	0	$7.34	—	8,540 Direct	0.00%	Disposed	7.4% (price as of 2026-08-21)
Dec. 31, 2023	ADTN	M	168	—	—	8,540 Direct	+2.01%	Acquired	(price as of 2026-08-21)
Sept. 5, 2023	ADTN	A	69	$8.37	$578	168 Direct	+69.70%	Acquired	-5.9% (price as of 2026-08-21)
Aug. 9, 2023	ADTN	M	46	—	—	99 Direct	-31.72%	Disposed	(price as of 2026-08-21)
Aug. 9, 2023	ADTN	D	1	—	—	8,372 Direct	-0.01%	Disposed	(price as of 2026-08-21)
Aug. 9, 2023	ADTN	M	46	—	—	8,373 Direct	+0.55%	Acquired	(price as of 2026-08-21)
June 6, 2023	ADTN	A	82	$9.14	$749	145 Direct	+130.16%	Acquired	-13.8% (price as of 2026-08-21)
March 21, 2023	ADTN	A	47	$15.96	$750	63 Direct	+293.75%	Acquired	-50.6% (price as of 2026-08-21)
Jan. 24, 2023	ADTN	A	1,629	—	—	8,327 Direct	+24.32%	Acquired	(price as of 2026-08-21)
Dec. 31, 2022	ADTN	A	4,790	—	—	6,698 Direct	+251.05%	Acquired	(price as of 2026-08-21)
Dec. 6, 2022	ADTN	A	9	$19.38	$174	16 Direct	+128.57%	Acquired	-59.3% (price as of 2026-08-21)
Sept. 1, 2022	ADTN	A	8	$22.70	$182	1,916 Direct	+0.42%	Acquired	-65.3% (price as of 2026-08-21)
Aug. 12, 2022	HLIT	M	7,054	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Aug. 12, 2022	HLIT	M	7,054	—	—	189,956 Direct	+3.86%	Acquired	(price as of 2026-08-21)
Aug. 9, 2022	ADTN	A	1,908	—	—	1,908 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 17, 2022	HLIT	A	14,395	—	—	14,395 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 15, 2022	HLIT	M	19,157	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 15, 2022	HLIT	M	19,157	—	—	182,902 Direct	+11.70%	Acquired	(price as of 2026-08-21)
Nov. 3, 2021	HLIT	M	30,000	$7.58	$227,400	0 Direct	-100.00%	Disposed	64.8% (price as of 2026-08-21)
Nov. 3, 2021	HLIT	S	30,000	$10.60	$318,000	163,745 Direct	-15.48%	Disposed	17.8% (price as of 2026-08-21)
Nov. 3, 2021	HLIT	M	30,000	$7.58	$227,400	193,745 Direct	+18.32%	Acquired	64.8% (price as of 2026-08-21)
Feb. 17, 2021	HLIT	A	19,157	—	—	19,157 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 15, 2021	HLIT	M	23,184	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 15, 2021	HLIT	M	23,184	—	—	163,745 Direct	+16.49%	Acquired	(price as of 2026-08-21)
March 18, 2020	HLIT	A	23,184	—	—	23,184 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 15, 2020	HLIT	M	21,238	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 15, 2020	HLIT	M	21,238	—	—	140,561 Direct	+17.80%	Acquired	(price as of 2026-08-21)
April 3, 2019	HLIT	A	21,238	—	—	21,238 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 15, 2019	HLIT	M	33,802	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 15, 2019	HLIT	M	33,802	—	—	119,323 Direct	+39.52%	Acquired	(price as of 2026-08-21)
March 9, 2018	HLIT	A	33,802	—	—	33,802 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 15, 2018	HLIT	M	20,690	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 15, 2018	HLIT	M	20,690	—	—	85,521 Direct	+31.91%	Acquired	(price as of 2026-08-21)
March 27, 2017	HLIT	A	20,690	—	—	20,690 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 15, 2017	HLIT	M	24,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 15, 2017	HLIT	M	24,000	—	—	64,831 Direct	+58.78%	Acquired	(price as of 2026-08-21)
Nov. 15, 2016	HLIT	P	25,000	$4.75	$118,750	40,831 Direct	+157.92%	Acquired	162.9% (price as of 2026-08-21)
March 14, 2016	HLIT	A	24,000	—	—	24,000 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 15, 2016	HLIT	M	15,831	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Feb. 15, 2016	HLIT	M	15,831	—	—	15,831 Direct	—	Acquired	(price as of 2026-08-21)
March 13, 2015	HLIT	A	30,000	$7.58	$227,400	30,000 Direct	—	Acquired	64.8% (price as of 2026-08-21)
March 13, 2015	HLIT	A	15,831	—	—	15,831 Direct	—	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.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Dec. 31, 2023	ADTN	Dividend Equivalent Rights	Common Stock (168)	—	—	168	Disposed
Sept. 5, 2023	ADTN	Dividend Equivalent Rights	Common Stock (69)	—	—	69	Acquired
Aug. 9, 2023	ADTN	Dividend Equivalent Rights	Common Stock (46)	—	—	46	Disposed
June 6, 2023	ADTN	Dividend Equivalent Rights	Common Stock (82)	—	—	82	Acquired
March 21, 2023	ADTN	Dividend Equivalent Rights	Common Stock (47)	—	—	47	Acquired
Dec. 6, 2022	ADTN	Dividend Equivalent Rights	Common Stock (9)	—	—	9	Acquired
Aug. 12, 2022	HLIT	Restricted Stock Units	Common Stock (7,054)	$0.00	Aug. 12, 2022	7,054	Disposed
Feb. 17, 2022	HLIT	Restricted Stock Units [F1]	Common Stock (14,395)	$0.00	Feb. 15, 2023	14,395	Acquired
Feb. 15, 2022	HLIT	Restricted Stock Units	Common Stock (19,157)	$0.00	Feb. 15, 2022	19,157	Disposed
Nov. 3, 2021	HLIT	Stock Option/Right to buy	Common Stock (30,000)	$7.58	March 13, 2022	30,000	Disposed
Feb. 17, 2021	HLIT	Restricted Stock Units [F1]	Common Stock (19,157)	$0.00	Feb. 15, 2022	19,157	Acquired
Feb. 15, 2021	HLIT	Restricted Stock Units	Common Stock (23,184)	$0.00	Feb. 15, 2021	23,184	Disposed
March 18, 2020	HLIT	Restricted Stock Units [F1]	Common Stock (23,184)	$0.00	Feb. 15, 2021	23,184	Acquired
Feb. 15, 2020	HLIT	Restricted Stock Units	Common Stock (21,238)	$0.00	Feb. 15, 2020	21,238	Disposed
April 3, 2019	HLIT	Restricted Stock Units [F1]	Common Stock (21,238)	$0.00	Feb. 15, 2020	21,238	Acquired
Feb. 15, 2019	HLIT	Restricted Stock Units	Common Stock (33,802)	$0.00	Feb. 15, 2019	33,802	Disposed
March 9, 2018	HLIT	Restricted Stock Units [F1]	Common Stock (33,802)	$0.00	Feb. 15, 2019	33,802	Acquired
Feb. 15, 2018	HLIT	Restricted Stock Unit	Common Stock (20,690)	$0.00	Feb. 15, 2018	20,690	Disposed
March 27, 2017	HLIT	Restricted Stock Units [F1]	Common Stock (20,690)	$0.00	Feb. 15, 2018	20,690	Acquired
Feb. 15, 2017	HLIT	Restricted Stock Unit	Common Stock (24,000)	$0.00	Feb. 15, 2017	24,000	Disposed
March 14, 2016	HLIT	Restricted Stock Units [F1]	Common Stock (24,000)	$0.00	Feb. 15, 2017	24,000	Acquired
Feb. 15, 2016	HLIT	Restricted Stock Units	Common Stock (15,831)	$0.00	Feb. 15, 2016	15,831	Disposed
March 13, 2015	HLIT	Stock Option/Right to buy	Common Stock (30,000)	$7.58	March 13, 2022	30,000	Acquired
March 13, 2015	HLIT	Restricted Stock Units [F1]	Common Stock (15,831)	$0.00	Feb. 15, 2016	15,831	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 3 holdings

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

Date	Ticker	Security	Shares	Ownership
Sept. 25, 2023	HTGC	Common Stock	0	Direct
July 18, 2022	ADTN	No securities are beneficially owned	0	Direct
June 5, 2014	ANET	Option to purchase Common Stock [F1]→ Common Stock (25,000)	25,000	Direct