Howell Peyton R

Insider

First SEC filing: Aug. 4, 2020 · Latest: Aug. 4, 2020

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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

COR selling April 4, 2018

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 78 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

78 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
April 4, 2018	COR	M	1,800	—	—	7,200 Direct	-20.00%	Disposed	(price as of 2026-08-19)
April 4, 2018	COR	M	1,200	—	—	4,800 Direct	-20.00%	Disposed	(price as of 2026-08-19)
April 4, 2018	COR	S	1,800	$82.72	$148,896	47,989 Direct	-3.62%	Disposed	282.4% (price as of 2026-08-19)
April 4, 2018	COR	M	1,800	$40.21	$72,378	49,789 Direct	+3.75%	Acquired	686.6% (price as of 2026-08-19)
April 4, 2018	COR	S	1,200	$82.72	$99,264	47,989 Direct	-2.44%	Disposed	282.4% (price as of 2026-08-19)
April 4, 2018	COR	M	1,200	$37.37	$44,844	49,189 Direct	+2.50%	Acquired	746.3% (price as of 2026-08-19)
March 7, 2018	COR	M	1,800	—	—	9,000 Direct	-16.67%	Disposed	(price as of 2026-08-19)
March 7, 2018	COR	M	1,200	—	—	6,000 Direct	-16.67%	Disposed	(price as of 2026-08-19)
March 7, 2018	COR	S	1,800	$93.78	$168,804	47,989 Direct	-3.62%	Disposed	237.3% (price as of 2026-08-19)
March 7, 2018	COR	M	1,800	$40.21	$72,378	49,789 Direct	+3.75%	Acquired	686.6% (price as of 2026-08-19)
March 7, 2018	COR	S	1,200	$93.78	$112,536	47,989 Direct	-2.44%	Disposed	237.3% (price as of 2026-08-19)
March 7, 2018	COR	M	1,200	$37.37	$44,844	49,189 Direct	+2.50%	Acquired	746.3% (price as of 2026-08-19)
March 1, 2018	COR	M	17,851	$68.49	$1,222,615	65,840 Direct	+37.20%	Acquired	361.8% (price as of 2026-08-19)
March 1, 2018	COR	S	17,851	$90.40	$1,613,730	47,989 Direct	-27.11%	Disposed	249.9% (price as of 2026-08-19)
March 1, 2018	COR	M	17,851	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
Feb. 7, 2018	COR	M	1,800	—	—	10,800 Direct	-14.29%	Disposed	(price as of 2026-08-19)
Feb. 7, 2018	COR	M	1,200	—	—	7,200 Direct	-14.29%	Disposed	(price as of 2026-08-19)
Feb. 7, 2018	COR	S	1,800	$91.60	$164,880	47,989 Direct	-3.62%	Disposed	245.3% (price as of 2026-08-19)
Feb. 7, 2018	COR	M	1,800	$40.21	$72,378	49,789 Direct	+3.75%	Acquired	686.6% (price as of 2026-08-19)
Feb. 7, 2018	COR	S	1,200	$91.60	$109,920	47,989 Direct	-2.44%	Disposed	245.3% (price as of 2026-08-19)
Feb. 7, 2018	COR	M	1,200	$37.37	$44,844	49,189 Direct	+2.50%	Acquired	746.3% (price as of 2026-08-19)
Jan. 8, 2018	COR	S	1,800	$95.11	$171,198	47,989 Direct	-3.62%	Disposed	232.5% (price as of 2026-08-19)
Jan. 8, 2018	COR	M	1,200	—	—	8,400 Direct	-12.50%	Disposed	(price as of 2026-08-19)
Jan. 8, 2018	COR	M	1,800	—	—	12,600 Direct	-12.50%	Disposed	(price as of 2026-08-19)
Jan. 8, 2018	COR	M	1,800	$40.21	$72,378	49,789 Direct	+3.75%	Acquired	686.6% (price as of 2026-08-19)
Jan. 8, 2018	COR	S	1,200	$95.11	$114,132	47,989 Direct	-2.44%	Disposed	232.5% (price as of 2026-08-19)
Jan. 8, 2018	COR	M	1,200	$37.37	$44,844	49,189 Direct	+2.50%	Acquired	746.3% (price as of 2026-08-19)
Dec. 14, 2017	COR	M	17,800	—	—	17,851 Direct	-49.93%	Disposed	(price as of 2026-08-19)
Dec. 14, 2017	COR	S	17,800	$89.70	$1,596,660	47,989 Direct	-27.06%	Disposed	252.6% (price as of 2026-08-19)
Dec. 14, 2017	COR	M	17,800	$68.49	$1,219,122	65,789 Direct	+37.09%	Acquired	361.8% (price as of 2026-08-19)
Dec. 6, 2017	COR	M	1,800	—	—	14,400 Direct	-11.11%	Disposed	(price as of 2026-08-19)
Dec. 6, 2017	COR	M	1,200	—	—	9,600 Direct	-11.11%	Disposed	(price as of 2026-08-19)
Dec. 6, 2017	COR	S	1,800	$86.20	$155,160	47,989 Direct	-3.62%	Disposed	266.9% (price as of 2026-08-19)
Dec. 6, 2017	COR	M	1,800	$40.21	$72,378	49,789 Direct	+3.75%	Acquired	686.6% (price as of 2026-08-19)
Dec. 6, 2017	COR	S	1,200	$86.20	$103,440	47,989 Direct	-2.44%	Disposed	266.9% (price as of 2026-08-19)
Dec. 6, 2017	COR	M	1,200	$37.37	$44,844	49,189 Direct	+2.50%	Acquired	746.3% (price as of 2026-08-19)
Nov. 30, 2017	COR	M	9,423	—	—	16,200 Direct	-36.78%	Disposed	(price as of 2026-08-19)
Nov. 30, 2017	COR	S	9,423	$85.80	$808,493	47,989 Direct	-16.41%	Disposed	268.6% (price as of 2026-08-19)
Nov. 30, 2017	COR	M	9,423	$40.21	$378,899	57,412 Direct	+19.64%	Acquired	686.6% (price as of 2026-08-19)
Nov. 17, 2017	COR	F	2,970	$82.75	$245,768	47,989 Direct	-5.83%	Disposed	282.2% (price as of 2026-08-19)
Nov. 17, 2017	COR	A	6,497	—	—	50,959 Direct	+14.61%	Acquired	(price as of 2026-08-19)
Nov. 15, 2017	COR	A	4,385	—	—	4,385 Direct	—	Acquired	(price as of 2026-08-19)
Nov. 15, 2017	COR	A	36,017	—	—	36,017 Direct	—	Acquired	(price as of 2026-08-19)
Nov. 10, 2017	COR	M	2,705	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
Nov. 10, 2017	COR	F	1,237	$75.00	$92,775	44,462 Direct	-2.71%	Disposed	321.7% (price as of 2026-08-19)
Nov. 10, 2017	COR	M	2,705	—	—	45,699 Direct	+6.29%	Acquired	(price as of 2026-08-19)
Nov. 8, 2017	COR	M	1,800	—	—	25,623 Direct	-6.56%	Disposed	(price as of 2026-08-19)
Nov. 8, 2017	COR	M	1,200	—	—	10,800 Direct	-10.00%	Disposed	(price as of 2026-08-19)
Nov. 8, 2017	COR	S	1,800	$74.87	$134,766	37,135 Direct	-4.62%	Disposed	322.4% (price as of 2026-08-19)
Nov. 8, 2017	COR	M	1,800	$40.21	$72,378	38,935 Direct	+4.85%	Acquired	686.6% (price as of 2026-08-19)
Nov. 8, 2017	COR	S	1,200	$74.87	$89,844	37,135 Direct	-3.13%	Disposed	322.4% (price as of 2026-08-19)
Nov. 8, 2017	COR	M	1,200	$37.37	$44,844	38,335 Direct	+3.23%	Acquired	746.3% (price as of 2026-08-19)
Oct. 26, 2017	COR	M	12,523	—	—	27,423 Direct	-31.35%	Disposed	(price as of 2026-08-19)
Oct. 26, 2017	COR	M	12,523	$40.21	$503,550	49,658 Direct	+33.72%	Acquired	686.6% (price as of 2026-08-19)
Oct. 26, 2017	COR	D	12,523	$85.80	$1,074,473	37,135 Direct	-25.22%	Disposed	268.6% (price as of 2026-08-19)
Oct. 24, 2017	COR	M	1,800	—	—	39,946 Direct	-4.31%	Disposed	(price as of 2026-08-19)
Oct. 24, 2017	COR	M	1,200	—	—	12,000 Direct	-9.09%	Disposed	(price as of 2026-08-19)
Oct. 24, 2017	COR	M	1,800	$40.21	$72,378	40,135 Direct	+4.70%	Acquired	686.6% (price as of 2026-08-19)
Oct. 24, 2017	COR	M	1,200	$37.37	$44,844	38,335 Direct	+3.23%	Acquired	746.3% (price as of 2026-08-19)
Oct. 24, 2017	COR	D	3,000	$82.69	$248,070	37,135 Direct	-7.47%	Disposed	282.5% (price as of 2026-08-19)
Sept. 25, 2017	COR	M	1,800	—	—	41,746 Direct	-4.13%	Disposed	(price as of 2026-08-19)
Sept. 25, 2017	COR	M	1,443	—	—	13,200 Direct	-9.85%	Disposed	(price as of 2026-08-19)
Sept. 25, 2017	COR	M	1,800	$40.21	$72,378	40,378 Direct	+4.67%	Acquired	686.6% (price as of 2026-08-19)
Sept. 25, 2017	COR	M	1,443	$37.37	$53,925	38,578 Direct	+3.89%	Acquired	746.3% (price as of 2026-08-19)
Sept. 25, 2017	COR	S	3,243	$80.23	$260,186	37,135 Direct	-8.03%	Disposed	294.2% (price as of 2026-08-19)
Aug. 16, 2017	COR	M	20,000	—	—	14,643 Direct	-57.73%	Disposed	(price as of 2026-08-19)
Aug. 16, 2017	COR	S	20,000	$80.00	$1,600,000	37,135 Direct	-35.00%	Disposed	295.3% (price as of 2026-08-19)
Aug. 16, 2017	COR	M	20,000	$37.37	$747,400	57,135 Direct	+53.86%	Acquired	746.3% (price as of 2026-08-19)
March 3, 2017	COR	M	45,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
March 3, 2017	COR	S	45,000	$91.81	$4,131,450	37,135 Direct	-54.79%	Disposed	244.5% (price as of 2026-08-19)
March 3, 2017	COR	M	45,000	$36.37	$1,636,650	82,135 Direct	+121.18%	Acquired	769.6% (price as of 2026-08-19)
Nov. 11, 2016	COR	A	8,760	—	—	37,135 Direct	+30.87%	Acquired	(price as of 2026-08-19)
Nov. 11, 2016	COR	F	1,395	$78.92	$110,093	28,375 Direct	-4.69%	Disposed	300.8% (price as of 2026-08-19)
Nov. 11, 2016	COR	F	4,185	$80.78	$338,064	29,770 Direct	-12.33%	Disposed	291.5% (price as of 2026-08-19)
Nov. 9, 2016	COR	A	3,968	—	—	3,968 Direct	—	Acquired	(price as of 2026-08-19)
Nov. 9, 2016	COR	A	44,280	—	—	44,280 Direct	—	Acquired	(price as of 2026-08-19)
Aug. 5, 2016	COR	M	3,750	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
Aug. 5, 2016	COR	M	45,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
Aug. 5, 2016	COR	S	48,750	$89.76	$4,375,800	33,955 Direct	-58.94%	Disposed	252.4% (price as of 2026-08-19)
Aug. 5, 2016	COR	M	3,750	$30.81	$115,538	82,705 Direct	+4.75%	Acquired	926.5% (price as of 2026-08-19)
Aug. 5, 2016	COR	M	45,000	$28.00	$1,260,000	78,955 Direct	+132.53%	Acquired	1029.6% (price as of 2026-08-19)
Nov. 13, 2015	COR	F	1,577	$96.59	$152,322	33,955 Direct	-4.44%	Disposed	227.4% (price as of 2026-08-19)
Nov. 13, 2015	COR	F	4,731	$94.99	$449,398	35,532 Direct	-11.75%	Disposed	233.0% (price as of 2026-08-19)
Nov. 13, 2015	COR	A	10,445	—	—	40,263 Direct	+35.03%	Acquired	(price as of 2026-08-19)
Nov. 11, 2015	COR	A	2,647	—	—	2,647 Direct	—	Acquired	(price as of 2026-08-19)
Nov. 11, 2015	COR	A	29,765	$98.24	$2,924,114	29,765 Direct	—	Acquired	221.9% (price as of 2026-08-19)
March 13, 2015	COR	M	45,984	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
March 13, 2015	COR	S	45,984	$105.86	$4,867,866	29,818 Direct	-60.66%	Disposed	198.8% (price as of 2026-08-19)
March 13, 2015	COR	M	45,984	$27.07	$1,244,787	75,802 Direct	+154.22%	Acquired	1068.4% (price as of 2026-08-19)
Feb. 27, 2015	COR	F	820	$102.76	$84,263	29,818 Direct	-2.68%	Disposed	207.8% (price as of 2026-08-19)
Nov. 13, 2014	COR	F	4,223	$88.71	$374,622	30,638 Direct	-12.11%	Disposed	256.5% (price as of 2026-08-19)
Nov. 13, 2014	COR	A	8,831	—	—	34,861 Direct	+33.93%	Acquired	(price as of 2026-08-19)
Nov. 12, 2014	COR	A	2,705	—	—	2,705 Direct	—	Acquired	(price as of 2026-08-19)
Nov. 12, 2014	COR	A	33,684	$88.71	$2,988,108	33,684 Direct	—	Acquired	256.5% (price as of 2026-08-19)
June 20, 2014	COR	M	45,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 20, 2014	COR	S	45,000	$71.53	$3,218,850	26,030 Direct	-63.35%	Disposed	342.2% (price as of 2026-08-19)
June 20, 2014	COR	M	45,000	$17.77	$799,650	71,030 Direct	+172.88%	Acquired	1679.9% (price as of 2026-08-19)
Feb. 14, 2014	COR	F	1,697	$68.00	$115,396	26,030 Direct	-6.12%	Disposed	365.1% (price as of 2026-08-19)
Dec. 10, 2013	COR	M	45,984	$21.26	$977,620	0 Direct	-100.00%	Disposed	1387.7% (price as of 2026-08-19)
Dec. 10, 2013	COR	S	45,984	$69.40	$3,191,290	27,727 Direct	-62.38%	Disposed	355.7% (price as of 2026-08-19)

Showing latest 100 of 112 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
April 4, 2018	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (1,800)	$40.21	Nov. 14, 2019	1,800	Disposed
April 4, 2018	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (1,200)	$37.37	March 1, 2019	1,200	Disposed
March 7, 2018	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (1,800)	$40.21	Nov. 14, 2019	1,800	Disposed
March 7, 2018	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (1,200)	$37.37	March 1, 2019	1,200	Disposed
March 1, 2018	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (17,851)	$68.49	Nov. 13, 2020	17,851	Disposed
Feb. 7, 2018	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (1,800)	$40.21	Nov. 14, 2019	1,800	Disposed
Feb. 7, 2018	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (1,200)	$37.37	March 1, 2019	1,200	Disposed
Jan. 8, 2018	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (1,200)	$37.37	March 1, 2019	1,200	Disposed
Jan. 8, 2018	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (1,800)	$40.21	Nov. 14, 2019	1,800	Disposed
Dec. 14, 2017	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (17,800)	$68.49	Nov. 13, 2020	17,800	Disposed
Dec. 6, 2017	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (1,800)	$40.21	Nov. 14, 2019	1,800	Disposed
Dec. 6, 2017	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (1,200)	$37.37	March 1, 2019	1,200	Disposed
Nov. 30, 2017	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (9,423)	$40.21	Nov. 14, 2019	9,423	Disposed
Nov. 15, 2017	COR	Restricted Stock Units	Common Stock (4,385)	—	—	4,385	Acquired
Nov. 15, 2017	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (36,017)	$77.53	Nov. 15, 2024	36,017	Acquired
Nov. 10, 2017	COR	Restricted Stock Units	Common Stock (2,705)	—	Nov. 12, 2021	2,705	Disposed
Nov. 8, 2017	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (1,800)	$40.21	Nov. 14, 2019	1,800	Disposed
Nov. 8, 2017	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (1,200)	$37.37	March 1, 2019	1,200	Disposed
Oct. 26, 2017	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (12,523)	$40.21	Nov. 14, 2019	12,523	Disposed
Oct. 24, 2017	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (1,800)	$40.21	Nov. 14, 2019	1,800	Disposed
Oct. 24, 2017	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (1,200)	$37.37	March 1, 2019	1,200	Disposed
Sept. 25, 2017	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (1,800)	$40.21	Nov. 14, 2019	1,800	Disposed
Sept. 25, 2017	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (1,443)	$37.37	March 1, 2019	1,443	Disposed
Aug. 16, 2017	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (20,000)	$37.37	March 1, 2019	20,000	Disposed
March 3, 2017	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (45,000)	$36.37	Feb. 16, 2018	45,000	Disposed
Nov. 9, 2016	COR	Restricted Stock Units	Common Stock (3,968)	—	Nov. 9, 2023	3,968	Acquired
Nov. 9, 2016	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (44,280)	$75.61	Nov. 9, 2023	44,280	Acquired
Aug. 5, 2016	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (3,750)	$30.81	June 1, 2017	3,750	Disposed
Aug. 5, 2016	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (45,000)	$28.00	March 3, 2017	45,000	Disposed
Nov. 11, 2015	COR	Restricted Stock Units	Common Stock (2,647)	—	Nov. 11, 2022	2,647	Acquired
Nov. 11, 2015	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (29,765)	$98.24	Nov. 11, 2022	29,765	Acquired
March 13, 2015	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (45,984)	$27.07	Feb. 15, 2017	45,984	Disposed
Nov. 12, 2014	COR	Restricted Stock Units	Common Stock (2,705)	—	Nov. 12, 2021	2,705	Acquired
Nov. 12, 2014	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (33,684)	$88.71	Nov. 12, 2021	33,684	Acquired
June 20, 2014	COR	Non-qualified Stock Option (Right to Buy)	Common Stock (45,000)	$17.77	Feb. 19, 2016	45,000	Disposed
Dec. 10, 2013	COR	Non-Qualified Stock Option (right to buy)	Common Stock (45,984)	$21.26	Feb. 8, 2016	45,984	Disposed
Nov. 13, 2013	COR	Non-Qualified Stock Option (right to buy)	Common Stock (35,651)	$68.49	Nov. 13, 2020	35,651	Acquired
Nov. 14, 2012	COR	Non-Qualified Stock Option (right to buy)	Common Stock (43,546)	$40.21	Nov. 14, 2019	43,546	Acquired
June 21, 2012	COR	Non-Qualified Stock Option (right to buy)	Common Stock (45,000)	$21.46	Feb. 27, 2015	45,000	Disposed
Feb. 29, 2012	COR	Non-Qualified Stock Option (right to buy)	Common Stock (34,643)	$37.37	March 1, 2019	34,643	Acquired

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

Initial ownership (Form 3) 9 holdings

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

Date	Ticker	Security	Shares	Ownership
Aug. 4, 2020	TNDM	Common Stock	0	Direct
Aug. 19, 2011	COR	Common Stock	21,722	Direct
Aug. 19, 2011	COR	Non-Qualified Stock Option (right to buy)→ Common Stock (45,984)	45,984	Direct
Aug. 19, 2011	COR	Non-Qualified Stock Option (right to buy)→ Common Stock (45,984)	45,984	Direct
Aug. 19, 2011	COR	Non-Qualified Stock Option (right to buy)→ Common Stock (45,000)	45,000	Direct
Aug. 19, 2011	COR	Non-Qualified Stock Option (right to buy)→ Common Stock (45,000)	45,000	Direct
Aug. 19, 2011	COR	Non-Qualified Stock Option (right to buy)→ Common Stock (45,000)	45,000	Direct
Aug. 19, 2011	COR	Non-Qualified Stock Option (right to buy)→ Common Stock (3,750)	3,750	Direct
Aug. 19, 2011	COR	Non-Qualified Stock Option (right to buy)→ Common Stock (45,000)	45,000	Direct