Mark D Chandler

Insider

First SEC filing: Sept. 17, 2003 · Latest: Sept. 17, 2003

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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

CSCO selling March 11, 2021

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 67 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

67 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 11, 2021	CSCO	S 10b5-1	318	$48.32	$15,366	177,731 Direct	-0.18%	Disposed	127.9% (price as of 2026-08-20)
March 10, 2021	CSCO	F	203	$47.89	$9,722	178,049 Direct	-0.11%	Disposed	130.0% (price as of 2026-08-20)
Feb. 12, 2021	CSCO	S 10b5-1	30,886	$47.21	$1,458,128	2,279 Indirect	-93.13%	Disposed	133.3% (price as of 2026-08-20)
Feb. 12, 2021	CSCO	S 10b5-1	3,024	$47.21	$142,763	178,252 Direct	-1.67%	Disposed	133.3% (price as of 2026-08-20)
Feb. 10, 2021	CSCO	F	2,196	$48.50	$106,506	181,276 Direct	-1.20%	Disposed	127.1% (price as of 2026-08-20)
Dec. 14, 2020	CSCO	S 10b5-1	268	$44.81	$12,009	182,474 Direct	-0.15%	Disposed	145.8% (price as of 2026-08-20)
Dec. 10, 2020	CSCO	F	253	$44.69	$11,307	182,742 Direct	-0.14%	Disposed	146.5% (price as of 2026-08-20)
Nov. 24, 2020	CSCO	S 10b5-1	5,330	$42.37	$225,832	182,995 Direct	-2.83%	Disposed	160.0% (price as of 2026-08-20)
Nov. 20, 2020	CSCO	F	5,264	$41.17	$216,719	188,325 Direct	-2.72%	Disposed	167.5% (price as of 2026-08-20)
Nov. 17, 2020	CSCO	S 10b5-1	40,706	$42.09	$1,713,316	193,589 Direct	-17.37%	Disposed	161.7% (price as of 2026-08-20)
Nov. 10, 2020	CSCO	F	38,249	$38.20	$1,461,112	234,295 Direct	-14.03%	Disposed	188.3% (price as of 2026-08-20)
Nov. 10, 2020	CSCO	A	68,556	—	—	272,544 Direct	+33.61%	Acquired	(price as of 2026-08-20)
Sept. 18, 2020	CSCO	A	50,239	—	—	202,889 Direct	+32.91%	Acquired	(price as of 2026-08-20)
Sept. 14, 2020	CSCO	S 10b5-1	346	$40.26	$13,930	152,650 Direct	-0.23%	Disposed	173.6% (price as of 2026-08-20)
Sept. 10, 2020	CSCO	F	174	$40.13	$6,983	152,996 Direct	-0.11%	Disposed	174.5% (price as of 2026-08-20)
Aug. 17, 2020	CSCO	S 10b5-1	2,791	$42.12	$117,557	153,170 Direct	-1.79%	Disposed	161.5% (price as of 2026-08-20)
Aug. 10, 2020	CSCO	F	1,219	$47.43	$57,817	155,961 Direct	-0.78%	Disposed	132.2% (price as of 2026-08-20)
June 12, 2020	CSCO	S 10b5-1	346	$45.07	$15,594	156,150 Direct	-0.22%	Disposed	144.4% (price as of 2026-08-20)
June 10, 2020	CSCO	F	175	$48.05	$8,409	156,496 Direct	-0.11%	Disposed	129.2% (price as of 2026-08-20)
May 18, 2020	CSCO	S 10b5-1	2,623	$45.01	$118,061	156,671 Direct	-1.65%	Disposed	144.7% (price as of 2026-08-20)
May 10, 2020	CSCO	F	1,218	$42.99	$52,362	159,294 Direct	-0.76%	Disposed	156.2% (price as of 2026-08-20)
March 10, 2020	CSCO	F	174	$37.96	$6,605	159,954 Direct	-0.11%	Disposed	190.2% (price as of 2026-08-20)
Feb. 18, 2020	CSCO	S 10b5-1	1,577	$46.52	$73,362	33,165 Indirect	-4.54%	Disposed	136.8% (price as of 2026-08-20)
Feb. 18, 2020	CSCO	S 10b5-1	42,783	$46.52	$1,990,265	160,128 Direct	-21.08%	Disposed	136.8% (price as of 2026-08-20)
Feb. 10, 2020	CSCO	F	1,273	$47.97	$61,066	202,911 Direct	-0.62%	Disposed	129.6% (price as of 2026-08-20)
May 31, 2018	CSCO	A	8,334	—	—	228,207 Direct	+3.79%	Acquired	(price as of 2026-08-20)
Nov. 20, 2017	CSCO	F	5,456	$35.90	$195,870	219,557 Direct	-2.42%	Disposed	206.8% (price as of 2026-08-20)
Sept. 20, 2017	CSCO	A	54,700	—	—	224,859 Direct	+32.15%	Acquired	(price as of 2026-08-20)
Sept. 18, 2017	CSCO	S	65,000	$32.43	$2,107,950	170,159 Direct	-27.64%	Disposed	239.6% (price as of 2026-08-20)
Sept. 11, 2017	CSCO	F	61,656	$31.48	$1,940,931	235,159 Direct	-20.77%	Disposed	249.9% (price as of 2026-08-20)
Sept. 11, 2017	CSCO	A	6,250	—	—	296,815 Direct	+2.15%	Acquired	(price as of 2026-08-20)
Sept. 11, 2017	CSCO	A	66,000	—	—	290,565 Direct	+29.39%	Acquired	(price as of 2026-08-20)
March 9, 2017	CSCO	S	16,000	$34.04	$544,640	34,742 Indirect	-31.53%	Disposed	223.6% (price as of 2026-08-20)
Sept. 27, 2016	CSCO	G	415	—	—	50,742 Indirect	+0.82%	Acquired	(price as of 2026-08-20)
Sept. 27, 2016	CSCO	G	415	—	—	223,455 Direct	-0.19%	Disposed	(price as of 2026-08-20)
Sept. 23, 2016	CSCO	S 10b5-1	62,910	$31.40	$1,975,374	50,327 Indirect	-55.56%	Disposed	250.8% (price as of 2026-08-20)
Sept. 23, 2016	CSCO	G	62,910	—	—	113,237 Indirect	+125.00%	Acquired	(price as of 2026-08-20)
Sept. 23, 2016	CSCO	G	62,910	—	—	223,718 Direct	-21.95%	Disposed	(price as of 2026-08-20)
Sept. 21, 2016	CSCO	A	56,500	—	—	286,628 Direct	+24.55%	Acquired	(price as of 2026-08-20)
Sept. 12, 2016	CSCO	S 10b5-1	50,049	$31.14	$1,558,526	50,327 Indirect	-49.86%	Disposed	253.7% (price as of 2026-08-20)
Sept. 11, 2016	CSCO	F	57,085	$30.85	$1,761,072	230,128 Direct	-19.88%	Disposed	257.0% (price as of 2026-08-20)
Sept. 11, 2016	CSCO	A	57,308	—	—	287,213 Direct	+24.93%	Acquired	(price as of 2026-08-20)
Aug. 22, 2016	CSCO	S 10b5-1	25,024	$30.44	$761,731	100,376 Indirect	-19.96%	Disposed	261.8% (price as of 2026-08-20)
Nov. 18, 2015	CSCO	S	88,331	$26.87	$2,373,454	228,959 Direct	-27.84%	Disposed	309.9% (price as of 2026-08-20)
Sept. 11, 2015	CSCO	F	77,666	$26.26	$2,039,509	317,290 Direct	-19.66%	Disposed	319.4% (price as of 2026-08-20)
Sept. 11, 2015	CSCO	A	83,875	—	—	394,956 Direct	+26.96%	Acquired	(price as of 2026-08-20)
Sept. 9, 2015	CSCO	A	71,500	—	—	311,081 Direct	+29.84%	Acquired	(price as of 2026-08-20)
June 11, 2015	CSCO	F	3,177	$28.66	$91,053	238,445 Direct	-1.31%	Disposed	284.3% (price as of 2026-08-20)
May 28, 2015	CSCO	A	37,500	—	—	241,622 Direct	+18.37%	Acquired	(price as of 2026-08-20)
March 2, 2015	CSCO	M 10b5-1	67,843	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 2, 2015	CSCO	S 10b5-1	67,843	$30.00	$2,035,290	204,122 Direct	-24.95%	Disposed	267.2% (price as of 2026-08-20)
March 2, 2015	CSCO	M 10b5-1	67,843	$23.01	$1,561,067	271,965 Direct	+33.24%	Acquired	378.7% (price as of 2026-08-20)
Feb. 26, 2015	CSCO	M	312,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 26, 2015	CSCO	S	312,500	$29.92	$9,350,000	204,122 Direct	-60.49%	Disposed	268.1% (price as of 2026-08-20)
Feb. 26, 2015	CSCO	M	312,500	$23.40	$7,312,500	516,622 Direct	+153.09%	Acquired	370.7% (price as of 2026-08-20)
Feb. 17, 2015	CSCO	M 10b5-1	67,842	—	—	67,843 Direct	-50.00%	Disposed	(price as of 2026-08-20)
Feb. 17, 2015	CSCO	S 10b5-1	67,842	$29.26	$1,985,057	204,122 Direct	-24.95%	Disposed	276.4% (price as of 2026-08-20)
Feb. 17, 2015	CSCO	M 10b5-1	67,842	$23.01	$1,561,044	271,964 Direct	+33.24%	Acquired	378.7% (price as of 2026-08-20)
Jan. 2, 2015	CSCO	G	9,888	—	—	204,122 Direct	-4.62%	Disposed	(price as of 2026-08-20)
Jan. 2, 2015	CSCO	G	9,888	—	—	125,400 Indirect	+8.56%	Acquired	(price as of 2026-08-20)
Dec. 17, 2014	CSCO	G	115,512	—	—	214,010 Direct	-35.05%	Disposed	(price as of 2026-08-20)
Dec. 17, 2014	CSCO	G	115,512	—	—	115,512 Indirect	—	Acquired	(price as of 2026-08-20)
Dec. 2, 2014	CSCO	M	78,191	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 2, 2014	CSCO	S	78,191	$27.90	$2,181,529	329,522 Direct	-19.18%	Disposed	294.8% (price as of 2026-08-20)
Dec. 2, 2014	CSCO	M	78,191	$20.86	$1,631,064	407,713 Direct	+23.73%	Acquired	428.0% (price as of 2026-08-20)
Nov. 18, 2014	CSCO	S	60,000	$26.71	$1,602,600	329,522 Direct	-15.40%	Disposed	312.4% (price as of 2026-08-20)
Nov. 17, 2014	CSCO	S	64,806	$26.29	$1,703,750	389,522 Direct	-14.26%	Disposed	319.0% (price as of 2026-08-20)
Sept. 11, 2014	CSCO	A	71,900	—	—	527,599 Direct	+15.78%	Acquired	(price as of 2026-08-20)
Sept. 11, 2014	CSCO	F	73,271	$24.93	$1,826,646	454,328 Direct	-13.89%	Disposed	341.8% (price as of 2026-08-20)
Sept. 10, 2014	CSCO	A	75,000	—	—	455,699 Direct	+19.70%	Acquired	(price as of 2026-08-20)
June 11, 2014	CSCO	F	2,265	$25.00	$56,625	379,563 Direct	-0.59%	Disposed	340.6% (price as of 2026-08-20)
May 23, 2014	CSCO	M	89,171	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 23, 2014	CSCO	S	89,171	$24.49	$2,183,798	381,828 Direct	-18.93%	Disposed	349.8% (price as of 2026-08-20)
May 23, 2014	CSCO	M	89,171	$17.86	$1,592,594	470,999 Direct	+23.35%	Acquired	516.7% (price as of 2026-08-20)
Nov. 20, 2013	CSCO	S	33,212	$21.40	$710,737	381,828 Direct	-8.00%	Disposed	414.7% (price as of 2026-08-20)
Sept. 18, 2013	CSCO	A	65,000	—	—	415,040 Direct	+18.57%	Acquired	(price as of 2026-08-20)
Sept. 11, 2013	CSCO	F	43,508	$24.16	$1,051,153	350,040 Direct	-11.06%	Disposed	355.9% (price as of 2026-08-20)
June 11, 2013	CSCO	F	2,269	$24.36	$55,273	391,972 Direct	-0.58%	Disposed	352.2% (price as of 2026-08-20)
May 20, 2013	CSCO	M	100,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 20, 2013	CSCO	S	100,000	$23.88	$2,388,000	394,241 Direct	-20.23%	Disposed	361.2% (price as of 2026-08-20)
May 20, 2013	CSCO	M	100,000	$19.18	$1,918,000	494,241 Direct	+25.37%	Acquired	474.3% (price as of 2026-08-20)
Dec. 17, 2012	CSCO	S	77,256	$20.08	$1,551,300	394,241 Direct	-16.39%	Disposed	448.5% (price as of 2026-08-20)
Sept. 21, 2012	CSCO	S	47,800	$18.91	$903,898	471,497 Direct	-9.20%	Disposed	482.5% (price as of 2026-08-20)
Sept. 21, 2012	CSCO	S	2,200	$18.91	$41,602	519,297 Direct	-0.42%	Disposed	482.5% (price as of 2026-08-20)
Sept. 12, 2012	CSCO	A	75,000	—	—	521,497 Direct	+16.80%	Acquired	(price as of 2026-08-20)
Sept. 11, 2012	CSCO	F	35,075	$19.15	$671,686	446,497 Direct	-7.28%	Disposed	475.2% (price as of 2026-08-20)
June 11, 2012	CSCO	F	2,206	$16.73	$36,906	479,995 Direct	-0.46%	Disposed	558.4% (price as of 2026-08-20)
March 16, 2012	CSCO	M	37,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 16, 2012	CSCO	S	37,500	$19.94	$747,750	482,201 Direct	-7.22%	Disposed	452.4% (price as of 2026-08-20)
March 16, 2012	CSCO	M	37,500	$13.04	$489,000	519,701 Direct	+7.78%	Acquired	744.7% (price as of 2026-08-20)
Sept. 21, 2011	CSCO	F	6,430	$16.53	$106,288	482,201 Direct	-1.32%	Disposed	566.3% (price as of 2026-08-20)
Sept. 19, 2011	CSCO	G	5,600	—	—	488,631 Direct	+1.16%	Acquired	(price as of 2026-08-20)
Sept. 19, 2011	CSCO	G	5,600	—	—	0 Indirect	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 11, 2011	CSCO	F	27,277	$15.82	$431,522	483,031 Direct	-5.35%	Disposed	596.2% (price as of 2026-08-20)
Sept. 8, 2011	CSCO	A	60,000	—	—	510,308 Direct	+13.32%	Acquired	(price as of 2026-08-20)
Aug. 18, 2011	CSCO	M	37,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 18, 2011	CSCO	S	18,400	$15.11	$278,024	450,308 Direct	-3.93%	Disposed	629.0% (price as of 2026-08-20)
Aug. 18, 2011	CSCO	S	19,100	$15.12	$288,792	468,708 Direct	-3.92%	Disposed	628.5% (price as of 2026-08-20)
Aug. 18, 2011	CSCO	M	37,500	$9.75	$365,625	487,808 Direct	+8.33%	Acquired	1029.7% (price as of 2026-08-20)
June 16, 2011	CSCO	A	25,000	—	—	439,090 Direct	+6.04%	Acquired	(price as of 2026-08-20)

Showing latest 100 of 162 transactions

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
March 2, 2015	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (67,843)	$23.01	Sept. 21, 2015	67,843	Disposed
Feb. 26, 2015	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (312,500)	$23.40	Nov. 12, 2016	312,500	Disposed
Feb. 17, 2015	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (67,842)	$23.01	Sept. 21, 2015	67,842	Disposed
Dec. 2, 2014	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (78,191)	$20.86	March 8, 2015	78,191	Disposed
May 23, 2014	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (89,171)	$17.86	Sept. 29, 2014	89,171	Disposed
May 20, 2013	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (100,000)	$19.18	Aug. 23, 2013	100,000	Disposed
March 16, 2012	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (37,500)	$13.04	April 10, 2012	37,500	Disposed
Aug. 18, 2011	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (37,500)	$9.75	Oct. 10, 2011	37,500	Disposed
April 4, 2011	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (30,000)	$16.15	April 5, 2011	30,000	Disposed
Sept. 21, 2010	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (35,000)	$17.26	Nov. 2, 2010	35,000	Disposed
June 29, 2010	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (50,000)	$16.01	Aug. 21, 2010	50,000	Disposed
March 22, 2010	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (50,000)	$18.57	May 14, 2010	50,000	Disposed
Nov. 12, 2009	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (312,500)	$23.40	Nov. 12, 2016	312,500	Acquired
Sept. 20, 2007	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (300,000)	$32.21	Sept. 20, 2016	300,000	Acquired
Aug. 22, 2007	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (34,000)	$26.42	April 16, 2008	34,000	Disposed
Dec. 6, 2006	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (40,000)	$19.56	Dec. 4, 2007	40,000	Disposed
Nov. 21, 2006	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (27,000)	$12.27	May 1, 2007	27,000	Disposed
Sept. 21, 2006	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (250,000)	$23.01	Sept. 21, 2015	250,000	Acquired
March 8, 2006	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (150,000)	$20.86	March 8, 2015	150,000	Acquired
Feb. 9, 2006	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (45,000)	$5.17	April 28, 2006	45,000	Disposed
Sept. 29, 2005	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (175,000)	$17.86	Sept. 29, 2014	175,000	Acquired
June 23, 2005	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (10,000)	$5.56	July 29, 2005	10,000	Disposed
May 24, 2005	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (35,000)	$5.56	July 29, 2005	35,000	Disposed
Aug. 23, 2004	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (200,000)	$19.18	Aug. 23, 2013	200,000	Acquired
Sept. 2, 2003	CSCO	Non-Qualified Stock Option (right to buy)	Common Stock (82,500)	$19.59	Sept. 2, 2012	82,500	Acquired

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

Initial ownership (Form 3) 16 holdings

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

Date	Ticker	Security	Shares	Ownership
Sept. 17, 2003	CSCO	Non-Qualified Stock Option (right to buy)→ Common Stock (45,000)	45,000	Direct
Sept. 17, 2003	CSCO	Non-Qualified Stock Option (right to buy)→ Common Stock (45,000)	45,000	Direct
Sept. 17, 2003	CSCO	Non-Qualified Stock Option (right to buy)→ Common Stock (75,000)	75,000	Direct
Sept. 17, 2003	CSCO	Non-Qualified Stock Option (right to buy)→ Common Stock (27,000)	27,000	Direct
Sept. 17, 2003	CSCO	Non-Qualified Stock Option (right to buy)→ Common Stock (75,000)	75,000	Direct
Sept. 17, 2003	CSCO	Non-Qualified Stock Option (right to buy)→ Common Stock (50,000)	50,000	Direct
Sept. 17, 2003	CSCO	Non-Qualified Stock Option (right to buy)→ Common Stock (60,000)	60,000	Direct
Sept. 17, 2003	CSCO	Non-Qualified Stock Option (right to buy)→ Common Stock (35,000)	35,000	Direct
Sept. 17, 2003	CSCO	Non-Qualified Stock Option (right to buy)→ Common Stock (50,000)	50,000	Direct
Sept. 17, 2003	CSCO	Non-Qualified Stock Option (right to buy)→ Common Stock (40,000)	40,000	Direct
Sept. 17, 2003	CSCO	Non-Qualified Stock Option (right to buy)→ Common Stock (60,000)	60,000	Direct
Sept. 17, 2003	CSCO	Non-Qualified Stock Option (right to buy)→ Common Stock (34,000)	34,000	Direct
Sept. 17, 2003	CSCO	Non-Qualified Stock Option (right to buy)→ Common Stock (80,000)	80,000	Direct
Sept. 17, 2003	CSCO	Non-Qualified Stock Option (right to buy)→ Common Stock (75,000)	75,000	Direct
Sept. 17, 2003	CSCO	Non-Qualified Stock Option (right to buy)→ Common Stock (56,250)	56,250	Direct
Sept. 17, 2003	CSCO	Non-Qualified Stock Option (right to buy)→ Common Stock (18,000)	18,000	Direct