Alfred A Piergallini

CIK 1198779 · View on SEC EDGAR ↗

Insider

First SEC filing: July 27, 2017 · Latest: July 27, 2017

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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

CENTA selling Aug. 17, 2017

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 90 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

90 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Dec. 8, 2017	CENTA	M	6,792	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Dec. 8, 2017	CENTA	F	1,689	$39.48	$66,682	65,503 Direct	-2.51%	Disposed	20.5% (price as of 2026-08-21)
Dec. 8, 2017	CENTA	M	6,762	$9.86	$66,673	67,192 Direct	+11.19%	Acquired	382.6% (price as of 2026-08-21)
Aug. 17, 2017	CENTA	S	6,390	$32.20	$205,758	60,430 Direct	-9.56%	Disposed	47.8% (price as of 2026-08-21)
Aug. 9, 2017	CENTA	M	9,697	—	—	4,849 Direct	-66.66%	Disposed	(price as of 2026-08-21)
Aug. 9, 2017	CENTA	F	3,937	$33.87	$133,346	66,820 Direct	-5.56%	Disposed	40.5% (price as of 2026-08-21)
Aug. 9, 2017	CENTA	M	9,697	$13.75	$133,334	70,757 Direct	+15.88%	Acquired	246.1% (price as of 2026-08-21)
July 25, 2017	28412	A	1,350	—	—	74,151 Direct	+1.85%	Acquired
April 10, 2017	28412	A	4,244	$67.31	$285,664	72,723 Direct	+6.20%	Acquired
Feb. 14, 2017	CENTA	A	6,298	—	—	6,298 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 14, 2017	CENTA	A	630	—	—	61,060 Direct	+1.04%	Acquired	(price as of 2026-08-21)
Dec. 8, 2016	CENTA	S	9,149	$31.17	$285,174	60,430 Direct	-13.15%	Disposed	52.7% (price as of 2026-08-21)
Dec. 7, 2016	CENTA	S	27,740	$30.91	$857,443	69,579 Direct	-28.50%	Disposed	54.0% (price as of 2026-08-21)
Dec. 6, 2016	CENTA	M	13,522	—	—	6,762 Direct	-66.66%	Disposed	(price as of 2026-08-21)
Dec. 6, 2016	CENTA	F	4,373	$30.49	$133,333	97,319 Direct	-4.30%	Disposed	56.1% (price as of 2026-08-21)
Dec. 6, 2016	CENTA	M	13,522	$9.86	$133,327	101,692 Direct	+15.34%	Acquired	382.6% (price as of 2026-08-21)
Dec. 2, 2016	CENTA	M	27,740	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Dec. 2, 2016	CENTA	F	6,931	$28.86	$200,029	88,170 Direct	-7.29%	Disposed	64.9% (price as of 2026-08-21)
Dec. 2, 2016	CENTA	M	27,740	$7.21	$200,005	95,101 Direct	+41.18%	Acquired	560.0% (price as of 2026-08-21)
July 26, 2016	28412	A	1,855	—	—	72,415 Direct	+2.63%	Acquired
April 8, 2016	28412	A	159	$36.76	$5,845	70,428 Direct	+0.23%	Acquired
Feb. 9, 2016	CENTA	A	14,546	—	—	14,546 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 9, 2016	CENTA	A	1,455	—	—	67,361 Direct	+2.21%	Acquired	(price as of 2026-08-21)
July 28, 2015	28412	A	1,810	—	—	70,795 Direct	+2.62%	Acquired
April 8, 2015	28412	A	155	$45.66	$7,077	68,895 Direct	+0.23%	Acquired
Feb. 10, 2015	CENTA	A	20,284	—	—	20,284 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 10, 2015	CENTA	A	2,029	—	—	65,906 Direct	+3.18%	Acquired	(price as of 2026-08-21)
July 22, 2014	28412	A	1,523	—	—	68,609 Direct	+2.27%	Acquired
April 8, 2014	28412	A	153	$50.41	$7,713	67,004 Direct	+0.23%	Acquired
Feb. 10, 2014	CENTA	A	27,740	—	—	27,740 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 10, 2014	CENTA	A	2,774	—	—	63,877 Direct	+4.54%	Acquired	(price as of 2026-08-21)
July 23, 2013	28412	A	1,516	—	—	66,765 Direct	+2.32%	Acquired
April 8, 2013	28412	A	280	$34.65	$9,702	65,488 Direct	+0.43%	Acquired
Feb. 11, 2013	CENTA	A	22,397	—	—	22,397 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 11, 2013	CENTA	A	2,240	—	—	61,103 Direct	+3.81%	Acquired	(price as of 2026-08-21)
Aug. 6, 2012	CENTA	M	30,582	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Aug. 6, 2012	CENTA	F	18,299	$10.93	$200,008	58,863 Direct	-23.72%	Disposed	335.4% (price as of 2026-08-21)
Aug. 6, 2012	CENTA	M	30,582	$6.54	$200,006	77,162 Direct	+65.65%	Acquired	627.6% (price as of 2026-08-21)
July 24, 2012	28412	A	2,178	$29.85	$65,013	64,893 Direct	+3.47%	Acquired
April 9, 2012	28412	A	275	$31.17	$8,572	62,635 Direct	+0.44%	Acquired
Feb. 13, 2012	CENTA	A	21,414	—	—	21,414 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 13, 2012	CENTA	A	2,142	—	—	46,580 Direct	+4.82%	Acquired	(price as of 2026-08-21)
July 26, 2011	28412	A	1,937	$33.55	$64,986	62,444 Direct	+3.20%	Acquired
May 23, 2011	CENTA	M	28,341	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
May 23, 2011	CENTA	M	28,341	$4.94	$140,005	44,438 Direct	+176.06%	Acquired	863.3% (price as of 2026-08-21)
April 8, 2011	28412	A	718	$37.83	$27,162	60,465 Direct	+1.20%	Acquired
Feb. 14, 2011	CENTA	A	21,165	—	—	21,165 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 14, 2011	CENTA	A	2,117	—	—	16,097 Direct	+15.14%	Acquired	(price as of 2026-08-21)
July 27, 2010	28412	A	1,532	—	—	60,366 Direct	+2.60%	Acquired
April 8, 2010	28412	A	124	$41.00	$5,084	58,815 Direct	+0.21%	Acquired
Feb. 8, 2010	CENTA	A	22,076	—	—	22,076 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 8, 2010	CENTA	A	2,208	—	—	13,980 Direct	+18.76%	Acquired	(price as of 2026-08-21)
July 28, 2009	28412	A	2,552	—	—	58,750 Direct	+4.54%	Acquired
April 8, 2009	28412	A	123	$16.42	$2,020	56,171 Direct	+0.22%	Acquired
Feb. 9, 2009	CENTA	A	30,582	—	—	30,582 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 9, 2009	CENTA	A	3,059	—	—	11,772 Direct	+35.11%	Acquired	(price as of 2026-08-21)
July 22, 2008	28412	A	1,939	—	—	55,759 Direct	+3.60%	Acquired
Feb. 11, 2008	CENTA	A	28,341	—	—	28,341 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 11, 2008	CENTA	A	3,037	—	—	8,713 Direct	+53.51%	Acquired	(price as of 2026-08-21)
Dec. 12, 2007	CENTA	P	2,000	$6.69	$13,380	8,979 Direct	+28.66%	Acquired	611.3% (price as of 2026-08-21)
Dec. 10, 2007	CENTA	P	1,500	$6.03	$9,045	6,979 Direct	+27.38%	Acquired	689.2% (price as of 2026-08-21)
Dec. 10, 2007	CENTA	P	1,400	$6.02	$8,428	5,479 Direct	+34.32%	Acquired	690.5% (price as of 2026-08-21)
Dec. 10, 2007	CENTA	P	100	$6.01	$601	4,079 Direct	+2.51%	Acquired	691.8% (price as of 2026-08-21)
July 24, 2007	28412	A	1,101	—	—	53,217 Direct	+2.11%	Acquired
May 24, 2007	CENTA	M	5,924	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
May 24, 2007	CENTA	M	2,962	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
May 24, 2007	CENTA	S	5,924	$13.50	$79,974	5,676 Direct	-51.07%	Disposed	252.5% (price as of 2026-08-21)
May 24, 2007	CENTA	M	5,924	$11.23	$66,527	11,600 Direct	+104.37%	Acquired	323.8% (price as of 2026-08-21)
May 24, 2007	CENTA	S	2,962	$14.59	$43,216	3,979 Direct	-42.67%	Disposed	226.2% (price as of 2026-08-21)
May 24, 2007	CENTA	M	2,962	$11.30	$33,471	6,941 Direct	+74.44%	Acquired	321.1% (price as of 2026-08-21)
Feb. 12, 2007	CENTA	A	11,024	—	—	11,024 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 12, 2007	CENTA	A	1,141	—	—	3,979 Direct	+40.20%	Acquired	(price as of 2026-08-21)
Jan. 12, 2007	28412	A	26	$58.05	$1,509	51,855 Direct	+0.05%	Acquired
Oct. 13, 2006	28412	A	13	$57.20	$744	51,779 Direct	+0.03%	Acquired
Oct. 13, 2006	28412	A	26	$57.20	$1,487	51,792 Direct	+0.05%	Acquired
Oct. 4, 2006	28412	A	120	$56.09	$6,731	51,766 Direct	+0.23%	Acquired
July 25, 2006	28412	A	1,059	—	—	51,596 Direct	+2.10%	Acquired
July 3, 2006	28412	A	118	$52.38	$6,181	50,537 Direct	+0.23%	Acquired
April 5, 2006	28412	A	144	$58.77	$8,463	50,368 Direct	+0.29%	Acquired
Feb. 13, 2006	CENTA	A	2,896	—	—	2,896 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 13, 2006	CENTA	A	311	—	—	2,838 Direct	+12.31%	Acquired	(price as of 2026-08-21)
Jan. 6, 2006	28412	A	109	$56.90	$6,202	50,180 Direct	+0.22%	Acquired
Oct. 3, 2005	28412	A	142	$59.47	$8,445	50,030 Direct	+0.28%	Acquired
Aug. 4, 2005	28412	A	787	—	—	46,350 Direct	+1.73%	Acquired
July 11, 2005	28412	A	131	$58.55	$7,670	45,564 Direct	+0.29%	Acquired
July 11, 2005	28412	A	131	$58.55	$7,670	45,564 Direct	+0.29%	Acquired
April 4, 2005	28412	A	168	$54.65	$9,181	45,395 Direct	+0.37%	Acquired
Feb. 7, 2005	CENTA	A	2,295	—	—	2,295 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 7, 2005	CENTA	A	230	—	—	2,527 Direct	+10.01%	Acquired	(price as of 2026-08-21)
Jan. 5, 2005	28412	A	25	$59.89	$1,497	45,190 Direct	+0.06%	Acquired
Jan. 3, 2005	28412	A	102	$60.63	$6,184	45,165 Direct	+0.23%	Acquired
Oct. 1, 2004	28412	A	128	$60.05	$7,686	45,033 Direct	+0.29%	Acquired
Aug. 9, 2004	28412	A	319	—	—	319 Direct	—	Acquired
July 16, 2004	28412	A	104	$56.39	$5,865	44,876 Direct	+0.23%	Acquired
June 1, 2004	28412	A	145	$56.00	$8,120	44,702 Direct	+0.33%	Acquired
May 24, 2004	CENTA	P	2,000	$36.54	$73,080	2,297 Direct	+673.40%	Acquired	30.2% (price as of 2026-08-21)
May 18, 2004	28412	A	2,500	—	—	2,500 Direct	—	Acquired
Feb. 27, 2004	28412	A	115	$57.74	$6,640	44,557 Direct	+0.26%	Acquired
Feb. 9, 2004	CENTA	A	2,962	—	—	2,962 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 9, 2004	CENTA	A	297	—	—	297 Direct	—	Acquired	(price as of 2026-08-21)

Showing latest 100 of 106 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
Dec. 8, 2017	CENTA	Stock Option (right to buy)	Class A Common Stock (6,762)	$9.86	Aug. 10, 2018	6,792	Disposed
Aug. 9, 2017	CENTA	Stock Option (Right to Buy)	Class A Common Stock (9,697)	$13.75	Aug. 9, 2019	9,697	Disposed
Feb. 14, 2017	CENTA	Stock Option (Right to Buy)	Class A Common Stock (6,298)	$31.76	Aug. 9, 2020	6,298	Acquired
Dec. 6, 2016	CENTA	Stock Option (right to buy)	Class A Common Stock (13,522)	$9.86	Aug. 10, 2018	13,522	Disposed
Dec. 2, 2016	CENTA	Director Stock Option (right to buy)	Class A Common Stock (27,740)	$7.21	Aug. 10, 2017	27,740	Disposed
Feb. 9, 2016	CENTA	Stock Option (right to buy)	Class A Common Stock (14,546)	$13.75	Aug. 9, 2019	14,546	Acquired
Feb. 10, 2015	CENTA	Director Stock Option (right to buy)	Class A Common Stock (20,284)	$9.86	Aug. 10, 2018	20,284	Acquired
Feb. 10, 2014	CENTA	Director Stock Option (right to buy)	Class A Common Stock (27,740)	$7.21	Aug. 10, 2017	27,740	Acquired
Feb. 11, 2013	CENTA	Director Stock Option (right to buy)	Class A Common Stock (22,397)	$8.93	Aug. 11, 2016	22,397	Acquired
Aug. 6, 2012	CENTA	Director Stock Option (right to buy)	Class A Common Stock (30,582)	$6.54	Aug. 9, 2012	30,582	Disposed
Feb. 13, 2012	CENTA	Director Stock Option (right to buy)	Class A Common Stock (21,414)	$9.34	Aug. 13, 2015	21,414	Acquired
May 23, 2011	CENTA	Director Stock Option (Right to Buy)	Class A Common Stock (28,341)	$4.94	Aug. 11, 2011	28,341	Disposed
Feb. 14, 2011	CENTA	Director Stock Option (right to buy)	Class A Common Stock (21,165)	$9.45	Aug. 14, 2014	21,165	Acquired
Feb. 8, 2010	CENTA	Director Stock Option (right to buy)	Class A Common Stock (22,076)	$9.06	Aug. 8, 2013	22,076	Acquired
Feb. 9, 2009	CENTA	Director Stock Option (right to buy)	Class A Common Stock (30,582)	$6.54	Aug. 9, 2012	30,582	Acquired
Feb. 11, 2008	CENTA	Director Stock Option (right to buy)	Class A Common Stock (28,341)	$4.94	Aug. 11, 2011	28,341	Acquired
May 24, 2007	CENTA	Director Stock Option (right to buy)	Class A Common Stock (5,924)	$11.23	Aug. 9, 2007	5,924	Disposed
May 24, 2007	CENTA	Director Stock Option (right to buy)	Common Stock (2,964)	$11.30	Aug. 9, 2007	2,962	Disposed
Feb. 12, 2007	CENTA	Director Stock Option (right to buy)	Class A Common Stock (11,024)	$12.70	Aug. 12, 2010	11,024	Acquired
Feb. 13, 2006	CENTA	Director Stock Option (right to buy)	Common Stock (2,896)	$48.35	Aug. 13, 2009	2,896	Acquired
Feb. 7, 2005	CENTA	Director Stock Option (Right to Buy)	Common Stock (2,295)	$43.58	Aug. 7, 2008	2,295	Acquired
Aug. 9, 2004	28412	Restricted Stock Units	Common Stock (319)	—	Aug. 8, 1988	319	Acquired
May 18, 2004	28412	Director Stock Option (right to buy)	Common Stock (2,500)	$53.87	May 18, 2014	2,500	Acquired
Feb. 9, 2004	CENTA	Stock Option (Right to Buy) [F1]	Common Stock (2,962)	$33.76	Aug. 9, 2007	2,962	Acquired
Jan. 26, 2004	28412	Director Stock Option (right to buy)	Common Stock (2,000)	$44.13	May 19, 2010	2,000	Disposed
Jan. 26, 2004	28412	Director Stock Option (right to buy)	Common Stock (1,500)	$40.09	May 16, 2007	1,500	Disposed

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

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
Feb. 11, 2004	CENTA	No securities owned	0	Direct