Richard N Nottenburg

Insider

First SEC filing: March 18, 2026 · Latest: March 18, 2026

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.
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

0 buys (P) 8 sells (S) Net: $-5,656,422 + 27 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

27 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Aug. 4, 2026	APLD	S	75,000	$31.15	$2,336,250	133,378 Direct	-35.99%	Disposed	-6.6% (price as of 2026-08-21)
April 30, 2026	APLD	S	12,500	$34.59	$432,375	208,378 Direct	-5.66%	Disposed	-15.9% (price as of 2026-08-21)
April 28, 2026	APLD	S	12,500	$32.00	$400,000	220,878 Direct	-5.36%	Disposed	-9.0% (price as of 2026-08-21)
Jan. 15, 2026	APLD	S	12,000	$35.45	$425,400	233,378 Direct	-4.89%	Disposed	-17.9% (price as of 2026-08-21)
Jan. 14, 2026	APLD	S	11,606	$35.28	$409,460	245,378 Direct	-4.52%	Disposed	-17.5% (price as of 2026-08-21)
Nov. 9, 2025	APLD	A	7,747	—	—	256,984 Direct	+3.11%	Acquired	(price as of 2026-08-21)
Oct. 31, 2025	APLD	S	9,375	$35.91	$336,656	249,237 Direct	-3.63%	Disposed	-19.0% (price as of 2026-08-21)
Oct. 30, 2025	APLD	S	5,000	$34.80	$174,000	258,612 Direct	-1.90%	Disposed	-16.4% (price as of 2026-08-21)
Oct. 24, 2025	APLD	S	34,375	$33.23	$1,142,281	263,612 Direct	-11.54%	Disposed	-12.4% (price as of 2026-08-21)
Aug. 8, 2025	APLD	S	11,250	$14.22	$159,975	317,987 Direct	-3.42%	Disposed	104.7% (price as of 2026-08-21)
Aug. 4, 2025	APLD	S	13,686	$12.50	$171,075	329,237 Direct	-3.99%	Disposed	132.8% (price as of 2026-08-21)
May 13, 2024	APLD	A	300,000	—	—	513,686 Direct	+140.39%	Acquired	(price as of 2026-08-21)
Nov. 9, 2023	APLD	A	33,685	—	—	213,686 Direct	+18.71%	Acquired	(price as of 2026-08-21)
Aug. 8, 2023	APLD	S	14,820	$7.74	$114,707	180,001 Direct	-7.61%	Disposed	276.0% (price as of 2026-08-21)
April 4, 2023	APLD	A	18,630	—	—	194,821 Direct	+10.57%	Acquired	(price as of 2026-08-21)
April 4, 2023	APLD	A	76,191	—	—	176,191 Direct	+76.19%	Acquired	(price as of 2026-08-21)
May 6, 2008	MSI	A	115,000	—	—	115,000 Direct	—	Acquired	(price as of 2026-08-21)
May 6, 2008	MSI	A	50,000	—	—	125,481 Direct	+66.24%	Acquired	(price as of 2026-08-21)
Nov. 3, 2007	MSI	F	10,090	$17.95	$181,116	75,250 Direct	-11.82%	Disposed	557.5% (price as of 2026-08-21)
July 23, 2007	MSI	F	11,864	$17.95	$212,959	85,207 Direct	-12.22%	Disposed	557.5% (price as of 2026-08-21)
June 25, 2007	MSI	D	75,000	—	—	96,824 Direct	-43.65%	Disposed	(price as of 2026-08-21)
May 8, 2007	MSI	A	200,000	—	—	200,000 Direct	—	Acquired	(price as of 2026-08-21)
May 8, 2007	MSI	A	75,000	—	—	171,824 Direct	+77.46%	Acquired	(price as of 2026-08-21)
July 27, 2006	MSI	M	83,820	—	—	167,640 Direct	-33.33%	Disposed	(price as of 2026-08-21)
July 27, 2006	MSI	S	5,700	$22.09	$125,913	96,150 Direct	-5.60%	Disposed	434.3% (price as of 2026-08-21)
July 27, 2006	MSI	S	27,500	$22.10	$607,750	101,850 Direct	-21.26%	Disposed	434.0% (price as of 2026-08-21)
July 27, 2006	MSI	S	45,100	$22.12	$997,612	129,350 Direct	-25.85%	Disposed	433.6% (price as of 2026-08-21)
July 27, 2006	MSI	S	17,069	$22.13	$377,737	174,450 Direct	-8.91%	Disposed	433.3% (price as of 2026-08-21)
July 27, 2006	MSI	M	83,820	$13.97	$1,170,965	191,519 Direct	+77.83%	Acquired	744.8% (price as of 2026-08-21)
July 23, 2006	MSI	F	7,525	$20.40	$153,510	107,699 Direct	-6.53%	Disposed	478.6% (price as of 2026-08-21)
July 12, 2006	MSI	D	50,000	—	—	114,942 Direct	-30.31%	Disposed	(price as of 2026-08-21)
May 5, 2006	MSI	M	68,750	—	—	206,250 Direct	+50.00%	Acquired	(price as of 2026-08-21)
May 5, 2006	MSI	M	43,820	—	—	251,460 Direct	+21.10%	Acquired	(price as of 2026-08-21)
May 5, 2006	MSI	S	150	$22.11	$3,316	164,942 Direct	-0.09%	Disposed	433.8% (price as of 2026-08-21)
May 5, 2006	MSI	S	7,400	$22.10	$163,540	165,092 Direct	-4.29%	Disposed	434.0% (price as of 2026-08-21)
May 5, 2006	MSI	S	1,200	$22.09	$26,508	172,492 Direct	-0.69%	Disposed	434.3% (price as of 2026-08-21)
May 5, 2006	MSI	S	111,370	$22.08	$2,459,050	173,692 Direct	-39.07%	Disposed	434.5% (price as of 2026-08-21)
May 5, 2006	MSI	M	68,750	$15.47	$1,063,562	285,062 Direct	+31.78%	Acquired	662.9% (price as of 2026-08-21)
May 5, 2006	MSI	M	43,820	$13.97	$612,165	216,312 Direct	+25.40%	Acquired	744.8% (price as of 2026-08-21)
May 3, 2006	MSI	A	200,000	—	—	200,000 Direct	—	Acquired	(price as of 2026-08-21)
May 3, 2006	MSI	A	50,000	—	—	172,492 Direct	+40.82%	Acquired	(price as of 2026-08-21)
Aug. 3, 2005	MSI	M	40,000	—	—	295,280 Direct	-11.93%	Disposed	(price as of 2026-08-21)
Aug. 3, 2005	MSI	S	40,000	$21.93	$877,200	121,925 Direct	-24.70%	Disposed	438.2% (price as of 2026-08-21)
Aug. 3, 2005	MSI	M	40,000	$13.97	$558,800	161,925 Direct	+32.81%	Acquired	744.8% (price as of 2026-08-21)
July 25, 2005	MSI	F	5,574	$20.00	$111,480	121,925 Direct	-4.37%	Disposed	490.1% (price as of 2026-08-21)
May 3, 2005	MSI	A	275,000	—	—	275,000 Direct	—	Acquired	(price as of 2026-08-21)
May 3, 2005	MSI	A	50,000	—	—	127,241 Direct	+64.73%	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
May 6, 2008	MSI	Employee Stock Option (Right to Buy)	Common Stock (115,000)	$10.26	May 6, 2018	115,000	Acquired
May 8, 2007	MSI	Employee Stock Option (Right to Buy)	Common Stock (200,000)	$17.70	May 8, 2017	200,000	Acquired
July 27, 2006	MSI	Employee Stock Option (Right to Buy)	Motorola, Inc. - Common Stock (83,820)	$13.97	July 23, 2014	83,820	Disposed
May 5, 2006	MSI	Employee Stock Option (Right to Buy)	Motorola, Inc. - Common Stock (68,750)	$15.47	May 3, 2015	68,750	Acquired
May 5, 2006	MSI	Employee Stock Option (Right to Buy)	Motorola, Inc. - Common Stock (43,820)	$13.97	July 23, 2014	43,820	Acquired
May 3, 2006	MSI	Employee Stock Option (Right to Buy)	Common Stock (200,000)	$21.25	May 3, 2016	200,000	Acquired
Aug. 3, 2005	MSI	Employee Stock Option (Right to Buy)	Motorola, Inc. - Common Stock	—	July 23, 2014	40,000	Disposed
May 3, 2005	MSI	Employee Stock Option (Right to Buy)	Common Stock (275,000)	$15.47	May 3, 2015	275,000	Acquired

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

Initial ownership (Form 3) 13 holdings

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

Date	Ticker	Security	Shares	Ownership
March 18, 2026	SQNS	Warrants→ Ordinary Shares (36,000)	36,000	Direct
March 18, 2026	SQNS	Warrants→ Ordinary Shares (180,000)	180,000	Direct
March 18, 2026	SQNS	Warrants→ Ordinary Shares (140,000)	140,000	Direct
March 18, 2026	SQNS	Warrants→ Ordinary Shares (140,000)	140,000	Direct
March 18, 2026	SQNS	Warrants→ Ordinary Shares (360,000)	360,000	Direct
March 18, 2026	SQNS	Warrants→ Ordinary Shares (40,000)	40,000	Direct
March 18, 2026	SQNS	Warrants→ Ordinary Shares (30,000)	30,000	Direct
March 18, 2026	SQNS	Warrants→ Ordinary Shares (36,000)	36,000	Direct
March 18, 2026	SQNS	Warrants→ Ordinary Shares (360,000)	360,000	Direct
March 18, 2026	SQNS	Warrants→ Ordinary Shares (30,000)	30,000	Direct
April 12, 2022	APLD	Common Stock	—	Direct
Aug. 2, 2004	MSI	Motorola, Inc. - Common Stock	76,700	Direct
Aug. 2, 2004	MSI	Employee Stock Option (Right to Buy)→ Common Stock (300,000)	300,000	Direct