Charles C Pappis

Insider

First SEC filing: Nov. 3, 2009 · Latest: Nov. 3, 2009

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) 2 sells (S) Net: $-510,450 + 21 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

21 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
April 17, 2026	ACMR	M	5,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
April 17, 2026	ACMR	S 10b5-1	5,000	$52.00	$260,000	0 Direct	-100.00%	Disposed	45.5% (price as of 2026-08-20)
April 17, 2026	ACMR	M	5,000	$29.18	$145,900	5,000 Direct	—	Acquired	159.4% (price as of 2026-08-20)
March 5, 2026	ACMR	M	5,000	—	—	5,000 Direct	-50.00%	Disposed	(price as of 2026-08-20)
March 5, 2026	ACMR	S 10b5-1	5,000	$50.09	$250,450	0 Direct	-100.00%	Disposed	51.1% (price as of 2026-08-20)
March 5, 2026	ACMR	M	5,000	$29.18	$145,900	5,000 Direct	—	Acquired	159.4% (price as of 2026-08-20)
Aug. 12, 2025	ACMR	A	20,000	—	—	20,000 Direct	—	Acquired	(price as of 2026-08-20)
March 15, 2025	ACMR	A	10,000	—	—	10,000 Direct	—	Acquired	(price as of 2026-08-20)
July 1, 2013	AMAT	M	21,667	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
July 1, 2013	AMAT	S	21,667	$14.91	$323,055	411,835 Direct	-5.00%	Disposed	3213.6% (price as of 2026-08-20)
July 1, 2013	AMAT	M	21,667	$8.58	$185,903	433,502 Direct	+5.26%	Acquired	5658.2% (price as of 2026-08-20)
Dec. 21, 2012	AMAT	S	24,112	$11.34	$273,430	411,835 Direct	-5.53%	Disposed	4256.7% (price as of 2026-08-20)
Dec. 21, 2012	AMAT	S	11,900	$11.33	$134,827	435,947 Direct	-2.66%	Disposed	4260.6% (price as of 2026-08-20)
Dec. 19, 2012	AMAT	F	20,863	$11.34	$236,586	447,847 Direct	-4.45%	Disposed	4256.7% (price as of 2026-08-20)
Dec. 5, 2012	AMAT	A	150,000	—	—	468,710 Direct	+47.06%	Acquired	(price as of 2026-08-20)
Dec. 20, 2011	AMAT	S	37,583	$10.62	$399,131	318,710 Direct	-10.55%	Disposed	4552.1% (price as of 2026-08-20)
Dec. 19, 2011	AMAT	F	32,417	$10.13	$328,384	356,293 Direct	-8.34%	Disposed	4777.1% (price as of 2026-08-20)
Dec. 5, 2011	AMAT	A	150,000	—	—	388,710 Direct	+62.84%	Acquired	(price as of 2026-08-20)
Sept. 9, 2011	AMAT	S	5,698	$10.79	$61,481	238,710 Direct	-2.33%	Disposed	4478.8% (price as of 2026-08-20)
Aug. 31, 2011	AMAT	F	3,302	$11.32	$37,379	244,408 Direct	-1.33%	Disposed	4264.4% (price as of 2026-08-20)
April 4, 2011	AMAT	M	21,667	—	—	21,667 Direct	-50.00%	Disposed	(price as of 2026-08-20)
April 4, 2011	AMAT	S	21,667	$15.37	$333,022	247,710 Direct	-8.04%	Disposed	3114.4% (price as of 2026-08-20)
April 4, 2011	AMAT	M	21,667	$8.58	$185,903	269,377 Direct	+8.75%	Acquired	5658.2% (price as of 2026-08-20)
Jan. 3, 2011	AMAT	M	21,666	—	—	43,334 Direct	-33.33%	Disposed	(price as of 2026-08-20)
Jan. 3, 2011	AMAT	S	7,914	$14.26	$112,854	247,710 Direct	-3.10%	Disposed	3364.6% (price as of 2026-08-20)
Jan. 3, 2011	AMAT	S	21,666	$14.26	$308,957	255,624 Direct	-7.81%	Disposed	3364.6% (price as of 2026-08-20)
Jan. 3, 2011	AMAT	M	21,666	$8.58	$185,894	277,290 Direct	+8.48%	Acquired	5658.2% (price as of 2026-08-20)
Dec. 19, 2010	AMAT	F	4,586	$13.61	$62,415	25,564 Direct	-15.21%	Disposed	3530.1% (price as of 2026-08-20)
Dec. 6, 2010	AMAT	A	125,000	—	—	260,210 Direct	+92.45%	Acquired	(price as of 2026-08-20)
Sept. 7, 2010	AMAT	S	13,612	$10.74	$146,193	135,210 Direct	-9.15%	Disposed	4500.1% (price as of 2026-08-20)
Aug. 31, 2010	AMAT	F	7,888	$10.37	$81,799	148,822 Direct	-5.03%	Disposed	4664.3% (price as of 2026-08-20)
Jan. 19, 2010	AMAT	A	125,000	—	—	156,710 Direct	+394.20%	Acquired	(price as of 2026-08-20)

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
April 17, 2026	ACMR	Stock Option	Class A Common Stock (5,000)	$29.18	March 14, 2035	5,000	Disposed
March 5, 2026	ACMR	Stock Option	Class A Common Stock (5,000)	$29.18	March 14, 2035	5,000	Disposed
Aug. 12, 2025	ACMR	Stock Option	Class A Common Stock (20,000)	$24.93	Aug. 11, 2035	20,000	Acquired
March 15, 2025	ACMR	Stock Option	Class A Common Stock (10,000)	$29.18	March 14, 2035	10,000	Acquired
July 1, 2013	AMAT	Employee Stock Option (Right to Buy)	Common Stock (21,667)	$8.58	March 9, 2014	21,667	Disposed
April 4, 2011	AMAT	Employee Stock Option (right to buy)	Common Stock (21,667)	$8.58	March 9, 2014	21,667	Disposed
Jan. 3, 2011	AMAT	Employee Stock Option (right to buy)	Common Stock (21,666)	$8.58	March 9, 2014	21,666	Disposed

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

Initial ownership (Form 3) 7 holdings

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

Date	Ticker	Security	Shares	Ownership
Nov. 3, 2009	AMAT	Common Stock	—	Direct
Nov. 3, 2009	AMAT	Common Stock	3,103	Indirect
Nov. 3, 2009	AMAT	Employee Stock Option (right to buy)→ Common Stock (50,000)	50,000	Direct
Nov. 3, 2009	AMAT	Employee Stock Option (right to buy)→ Common Stock (36,000)	36,000	Direct
Nov. 3, 2009	AMAT	Employee Stock Option (right to buy)→ Common Stock (25,000)	25,000	Direct
Nov. 3, 2009	AMAT	Employee Stock Option (right to buy)→ Common Stock (40,000)	40,000	Direct
Nov. 3, 2009	AMAT	Employee Stock Option (right to buy)→ Common Stock (65,000)	65,000	Direct