Dian C Taylor

CIK 1208428 · View on SEC EDGAR ↗

Insider

First SEC filing: May 6, 2026 · Latest: May 6, 2026

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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.

Insider at

ARTNA selling Aug. 18, 2026

Insider transactions

0 buys (P) 7 sells (S) Net: $-436,939 + 71 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

71 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Aug. 18, 2026	ARTNA	S	2,000	$35.00	$70,000	36,073 Direct	-5.25%	Disposed	0.6% (price as of 2026-08-20)
Aug. 17, 2026	ARTNA	S	2,000	$35.01	$70,020	38,073 Direct	-4.99%	Disposed	0.5% (price as of 2026-08-20)
May 5, 2026	ARTNA	J	1,000	$31.41	$31,410	0 Direct	-100.00%	Disposed	12.1% (price as of 2026-08-20)
May 5, 2026	ARTNA	A	1,000	$31.41	$31,410	1,000 Direct	—	Acquired	12.1% (price as of 2026-08-20)
May 5, 2026	ARTNA	J	1,000	$31.41	$31,410	104,021 Direct	+0.97%	Acquired	12.1% (price as of 2026-08-20)
March 23, 2026	ARTNA	S	1,000	$31.25	$31,250	103,021 Direct	-0.96%	Disposed	12.6% (price as of 2026-08-20)
March 20, 2026	ARTNA	S	2,000	$31.00	$62,000	104,021 Direct	-1.89%	Disposed	13.5% (price as of 2026-08-20)
March 19, 2026	ARTNA	S	2,000	$31.00	$62,000	106,021 Direct	-1.85%	Disposed	13.5% (price as of 2026-08-20)
Dec. 22, 2025	ARTNA	S	2,224	$31.97	$71,101	38,450 Indirect	-5.47%	Disposed	10.1% (price as of 2026-08-20)
Dec. 19, 2025	ARTNA	S	2,224	$31.73	$70,568	40,674 Indirect	-5.18%	Disposed	10.9% (price as of 2026-08-20)
May 6, 2025	ARTNA	J	1,000	$37.07	$37,070	0 Direct	-100.00%	Disposed	-5.0% (price as of 2026-08-20)
May 6, 2025	ARTNA	J	1,000	$37.07	$37,070	108,021 Direct	+0.93%	Acquired	-5.0% (price as of 2026-08-20)
May 5, 2025	ARTNA	A	1,000	$34.27	$34,270	1,000 Direct	—	Acquired	2.7% (price as of 2026-08-20)
May 9, 2024	ARTNA	J	1,000	$54.88	$54,880	0 Direct	-100.00%	Disposed	-35.9% (price as of 2026-08-20)
May 9, 2024	ARTNA	J	1,000	$54.88	$54,880	107,021 Direct	+0.94%	Acquired	-35.9% (price as of 2026-08-20)
May 6, 2024	ARTNA	A	1,000	$37.07	$37,070	1,000 Direct	—	Acquired	-5.0% (price as of 2026-08-20)
May 9, 2023	ARTNA	A	1,000	$54.88	$54,880	1,000 Direct	—	Acquired	-35.9% (price as of 2026-08-20)
May 3, 2023	ARTNA	J	1,000	$45.58	$45,580	0 Direct	-100.00%	Disposed	-22.8% (price as of 2026-08-20)
May 3, 2023	ARTNA	J	1,000	$45.58	$45,580	106,021 Direct	+0.95%	Acquired	-22.8% (price as of 2026-08-20)
Dec. 14, 2022	ARTNA	X	1,019	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 14, 2022	ARTNA	S	1,019	$55.62	$56,677	105,021 Direct	-0.96%	Disposed	-36.7% (price as of 2026-08-20)
Dec. 14, 2022	ARTNA	X	1,019	$21.86	$22,275	106,040 Direct	+0.97%	Acquired	61.0% (price as of 2026-08-20)
Dec. 13, 2022	ARTNA	X	853	—	—	1,019 Direct	-45.57%	Disposed	(price as of 2026-08-20)
Dec. 13, 2022	ARTNA	S	853	$55.59	$47,418	105,021 Direct	-0.81%	Disposed	-36.7% (price as of 2026-08-20)
Dec. 13, 2022	ARTNA	X	853	$21.86	$18,647	105,874 Direct	+0.81%	Acquired	61.0% (price as of 2026-08-20)
Dec. 12, 2022	ARTNA	X	110	—	—	1,872 Direct	-5.55%	Disposed	(price as of 2026-08-20)
Dec. 12, 2022	ARTNA	S	110	$55.60	$6,116	105,021 Direct	-0.10%	Disposed	-36.7% (price as of 2026-08-20)
Dec. 12, 2022	ARTNA	X	110	$21.86	$2,405	105,131 Direct	+0.10%	Acquired	61.0% (price as of 2026-08-20)
Dec. 9, 2022	ARTNA	X	4,768	—	—	1,982 Direct	-70.64%	Disposed	(price as of 2026-08-20)
Dec. 9, 2022	ARTNA	S	4,768	$55.58	$265,005	105,021 Direct	-4.34%	Disposed	-36.7% (price as of 2026-08-20)
Dec. 9, 2022	ARTNA	X	4,768	$21.86	$104,228	109,789 Direct	+4.54%	Acquired	61.0% (price as of 2026-08-20)
Sept. 16, 2022	ARTNA	X	6,750	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 16, 2022	ARTNA	S	100	$59.02	$5,902	105,021 Direct	-0.10%	Disposed	-40.4% (price as of 2026-08-20)
Sept. 16, 2022	ARTNA	S	3,650	$59.00	$215,350	105,121 Direct	-3.36%	Disposed	-40.3% (price as of 2026-08-20)
Sept. 16, 2022	ARTNA	S	3,000	$57.99	$173,970	108,771 Direct	-2.68%	Disposed	-39.3% (price as of 2026-08-20)
Sept. 16, 2022	ARTNA	X	6,750	$22.66	$152,955	111,771 Direct	+6.43%	Acquired	55.3% (price as of 2026-08-20)
May 4, 2022	ARTNA	J	1,000	$40.11	$40,110	0 Direct	-100.00%	Disposed	-12.2% (price as of 2026-08-20)
May 4, 2022	ARTNA	J	1,000	$40.11	$40,110	105,021 Direct	+0.96%	Acquired	-12.2% (price as of 2026-08-20)
May 3, 2022	ARTNA	A	1,000	$45.58	$45,580	1,000 Direct	—	Acquired	-22.8% (price as of 2026-08-20)
March 24, 2022	ARTNA	S	5,604	$46.99	$263,332	104,021 Direct	-5.11%	Disposed	-25.1% (price as of 2026-08-20)
March 23, 2022	ARTNA	X	6,750	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 23, 2022	ARTNA	S	1,146	$47.08	$53,954	109,625 Direct	-1.03%	Disposed	-25.2% (price as of 2026-08-20)
March 23, 2022	ARTNA	X	6,750	$19.01	$128,318	110,771 Direct	+6.49%	Acquired	85.2% (price as of 2026-08-20)
May 14, 2021	ARTNA	X	3,020	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 14, 2021	ARTNA	S	3,020	$39.40	$118,988	104,021 Direct	-2.82%	Disposed	-10.7% (price as of 2026-08-20)
May 14, 2021	ARTNA	X	3,020	$19.06	$57,561	107,041 Direct	+2.90%	Acquired	84.7% (price as of 2026-08-20)
May 10, 2021	ARTNA	X	1,595	—	—	3,020 Direct	-34.56%	Disposed	(price as of 2026-08-20)
May 10, 2021	ARTNA	S	1,595	$40.50	$64,598	104,021 Direct	-1.51%	Disposed	-13.1% (price as of 2026-08-20)
May 10, 2021	ARTNA	X	1,595	$19.06	$30,401	105,616 Direct	+1.53%	Acquired	84.7% (price as of 2026-08-20)
May 7, 2021	ARTNA	X	500	—	—	4,615 Direct	-9.78%	Disposed	(price as of 2026-08-20)
May 7, 2021	ARTNA	S	500	$40.61	$20,305	104,021 Direct	-0.48%	Disposed	-13.3% (price as of 2026-08-20)
May 7, 2021	ARTNA	X	500	$19.06	$9,530	104,521 Direct	+0.48%	Acquired	84.7% (price as of 2026-08-20)
May 6, 2021	ARTNA	J	1,000	$35.01	$35,010	0 Direct	-100.00%	Disposed	0.5% (price as of 2026-08-20)
May 6, 2021	ARTNA	J	1,000	$35.01	$35,010	104,021 Direct	+0.97%	Acquired	0.5% (price as of 2026-08-20)
May 4, 2021	ARTNA	A	1,000	$40.11	$40,110	1,000 Direct	—	Acquired	-12.2% (price as of 2026-08-20)
March 23, 2021	ARTNA	X	1,635	—	—	5,115 Direct	-24.22%	Disposed	(price as of 2026-08-20)
March 23, 2021	ARTNA	S	1,635	$39.19	$64,076	103,021 Direct	-1.56%	Disposed	-10.2% (price as of 2026-08-20)
March 23, 2021	ARTNA	X	1,635	$19.06	$31,163	104,656 Direct	+1.59%	Acquired	84.7% (price as of 2026-08-20)
May 8, 2020	ARTNA	J	1,000	$36.11	$36,110	0 Direct	-100.00%	Disposed	-2.5% (price as of 2026-08-20)
May 8, 2020	ARTNA	J	1,000	$36.11	$36,110	103,021 Direct	+0.98%	Acquired	-2.5% (price as of 2026-08-20)
May 6, 2020	ARTNA	A	1,000	$35.01	$35,010	1,000 Direct	—	Acquired	0.5% (price as of 2026-08-20)
April 23, 2020	ARTNA	X	6,750	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
April 23, 2020	ARTNA	X	6,750	$18.61	$125,618	102,021 Direct	+7.09%	Acquired	89.1% (price as of 2026-08-20)
May 8, 2019	ARTNA	A	1,000	$36.11	$36,110	1,000 Direct	—	Acquired	-2.5% (price as of 2026-08-20)
May 2, 2019	ARTNA	J	1,000	$38.51	$38,510	0 Direct	-100.00%	Disposed	-8.6% (price as of 2026-08-20)
May 2, 2019	ARTNA	J	1,000	$38.51	$38,510	95,271 Direct	+1.06%	Acquired	-8.6% (price as of 2026-08-20)
May 3, 2018	ARTNA	J	1,000	$38.10	$38,100	0 Direct	-100.00%	Disposed	-7.6% (price as of 2026-08-20)
May 3, 2018	ARTNA	J	1,000	$38.10	$38,100	94,271 Direct	+1.07%	Acquired	-7.6% (price as of 2026-08-20)
May 2, 2018	ARTNA	A	1,000	$38.51	$38,510	1,000 Direct	—	Acquired	-8.6% (price as of 2026-08-20)
Nov. 30, 2017	ARTNA	X	6,750	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 30, 2017	ARTNA	X	2,048	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 30, 2017	ARTNA	S	6,750	$42.36	$285,930	93,271 Direct	-6.75%	Disposed	-16.9% (price as of 2026-08-20)
Nov. 30, 2017	ARTNA	X	6,750	$15.26	$103,005	100,021 Direct	+7.24%	Acquired	130.7% (price as of 2026-08-20)
Nov. 30, 2017	ARTNA	S	2,048	$42.36	$86,753	93,271 Direct	-2.15%	Disposed	-16.9% (price as of 2026-08-20)
Nov. 30, 2017	ARTNA	X	2,048	$18.43	$37,745	95,319 Direct	+2.20%	Acquired	91.0% (price as of 2026-08-20)
June 28, 2017	ARTNA	A	831	$38.06	$31,628	93,281 Direct	+0.90%	Acquired	-7.5% (price as of 2026-08-20)
June 28, 2017	ARTNA	A	821	$38.06	$31,247	93,271 Direct	+0.89%	Acquired	-7.5% (price as of 2026-08-20)
June 23, 2017	ARTNA	X	4,702	$18.43	$86,658	97,152 Direct	+5.09%	Acquired	91.0% (price as of 2026-08-20)
June 23, 2017	ARTNA	S	4,702	$40.08	$188,456	92,450 Direct	-4.84%	Disposed	-12.2% (price as of 2026-08-20)
June 23, 2017	ARTNA	X	4,702	—	—	2,048 Direct	-69.66%	Disposed	(price as of 2026-08-20)
May 4, 2017	ARTNA	J	1,000	$38.30	$38,300	0 Direct	-100.00%	Disposed	-8.1% (price as of 2026-08-20)
May 4, 2017	ARTNA	J	1,000	$38.30	$38,300	92,450 Direct	+1.09%	Acquired	-8.1% (price as of 2026-08-20)
May 3, 2017	ARTNA	A	1,000	$38.10	$38,100	1,000 Direct	—	Acquired	-7.6% (price as of 2026-08-20)
March 21, 2017	ARTNA	X	6,750	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 21, 2017	ARTNA	S	1	$33.75	$34	91,450 Direct	0.00%	Disposed	4.3% (price as of 2026-08-20)
March 21, 2017	ARTNA	S	848	$33.00	$27,984	91,451 Direct	-0.92%	Disposed	6.7% (price as of 2026-08-20)
March 21, 2017	ARTNA	S	5,901	$33.11	$195,382	92,299 Direct	-6.01%	Disposed	6.3% (price as of 2026-08-20)
March 21, 2017	ARTNA	X	6,750	$19.56	$132,030	98,200 Direct	+7.38%	Acquired	80.0% (price as of 2026-08-20)
May 4, 2016	ARTNA	A	1,000	$27.70	$27,700	1,000 Direct	—	Acquired	27.1% (price as of 2026-08-20)
March 23, 2016	ARTNA	X	6,750	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 23, 2016	ARTNA	S	6,750	$25.89	$174,758	91,450 Direct	-6.87%	Disposed	36.0% (price as of 2026-08-20)
March 23, 2016	ARTNA	X	6,750	$21.11	$142,492	98,200 Direct	+7.38%	Acquired	66.7% (price as of 2026-08-20)
Dec. 18, 2015	ARTNA	A	1,000	$27.38	$27,380	91,450 Direct	+1.11%	Acquired	28.6% (price as of 2026-08-20)
Nov. 23, 2015	ARTNA	X	8,016	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 23, 2015	ARTNA	S	8,016	$25.50	$204,408	90,450 Direct	-8.14%	Disposed	38.0% (price as of 2026-08-20)
Nov. 23, 2015	ARTNA	X	8,016	$19.70	$157,915	98,466 Direct	+8.86%	Acquired	78.7% (price as of 2026-08-20)
Nov. 20, 2015	ARTNA	X	234	$19.70	$4,610	90,684 Direct	+0.26%	Acquired	78.7% (price as of 2026-08-20)
Nov. 20, 2015	ARTNA	X	234	—	—	8,016 Direct	-2.84%	Disposed	(price as of 2026-08-20)
Nov. 19, 2015	ARTNA	S	3,000	$25.00	$75,000	90,450 Direct	-3.21%	Disposed	40.8% (price as of 2026-08-20)
Nov. 19, 2015	ARTNA	X	3,000	—	—	8,250 Direct	-26.67%	Disposed	(price as of 2026-08-20)

Showing latest 100 of 218 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
May 5, 2026	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 6, 2026	1,000	Disposed
May 5, 2026	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 6, 2027	1,000	Acquired
May 6, 2025	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 7, 2025	1,000	Disposed
May 5, 2025	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 6, 2026	1,000	Acquired
May 9, 2024	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 10, 2024	1,000	Disposed
May 6, 2024	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 7, 2025	1,000	Acquired
May 9, 2023	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 10, 2024	1,000	Acquired
May 3, 2023	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 4, 2023	1,000	Disposed
Dec. 14, 2022	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (1,019)	$21.86	May 7, 2024	1,019	Disposed
Dec. 13, 2022	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (853)	$21.86	May 7, 2024	853	Disposed
Dec. 12, 2022	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (110)	$21.86	May 7, 2024	110	Disposed
Dec. 9, 2022	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (4,768)	$21.86	May 7, 2024	4,768	Disposed
Sept. 16, 2022	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (6,750)	$22.66	May 8, 2023	6,750	Disposed
May 4, 2022	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 5, 2022	1,000	Disposed
May 3, 2022	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 4, 2023	1,000	Acquired
March 23, 2022	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (6,750)	$19.01	May 9, 2022	6,750	Disposed
May 14, 2021	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (3,020)	$19.06	May 17, 2021	3,020	Disposed
May 10, 2021	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (1,595)	$19.06	May 17, 2021	1,595	Disposed
May 7, 2021	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (500)	$19.06	May 17, 2021	500	Disposed
May 6, 2021	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 7, 2021	1,000	Disposed
May 4, 2021	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 5, 2022	1,000	Acquired
March 23, 2021	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (1,635)	$19.06	May 17, 2021	1,635	Disposed
May 8, 2020	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 8, 2020	1,000	Disposed
May 6, 2020	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 7, 2021	1,000	Acquired
April 23, 2020	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (6,750)	$18.61	May 18, 2020	6,750	Disposed
May 8, 2019	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 8, 2020	1,000	Acquired
May 2, 2019	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 3, 2019	1,000	Disposed
May 3, 2018	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 4, 2018	1,000	Disposed
May 2, 2018	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 3, 2019	1,000	Acquired
Nov. 30, 2017	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (6,750)	$15.26	May 19, 2019	6,750	Disposed
Nov. 30, 2017	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (2,048)	$18.43	May 14, 2018	2,048	Disposed
June 23, 2017	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (4,702)	$18.43	May 14, 2018	4,702	Disposed
May 4, 2017	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 5, 2017	1,000	Disposed
May 3, 2017	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 4, 2018	1,000	Acquired
March 21, 2017	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (6,750)	$19.56	May 16, 2017	6,750	Disposed
May 4, 2016	ARTNA	Restricted Stock Grant	Class A Non-voting Common Stock (1,000)	$0.00	May 5, 2017	1,000	Acquired
March 23, 2016	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (6,750)	$21.11	May 12, 2016	6,750	Disposed
Nov. 23, 2015	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (8,016)	$19.70	Dec. 20, 2015	8,016	Disposed
Nov. 20, 2015	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (234)	$19.70	Dec. 20, 2015	234	Disposed
Nov. 19, 2015	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (3,000)	$19.70	Dec. 20, 2015	3,000	Disposed
May 22, 2014	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (3,882)	$16.13	May 26, 2014	3,882	Disposed
May 21, 2014	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (2,868)	$16.13	May 26, 2014	2,868	Disposed
May 7, 2014	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (6,750)	$21.86	May 7, 2024	6,750	Acquired
May 14, 2013	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (5,250)	$13.30	May 21, 2013	5,250	Disposed
May 8, 2013	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (6,750)	$22.66	May 8, 2023	6,750	Acquired
Dec. 12, 2012	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (1,500)	$13.30	May 21, 2013	1,500	Disposed
May 9, 2012	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (6,750)	$19.01	May 9, 2022	6,750	Acquired
May 17, 2011	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (6,750)	$19.06	May 17, 2021	6,750	Acquired
Dec. 16, 2010	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (6,250)	$12.40	June 5, 2012	6,250	Disposed
Dec. 15, 2010	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (500)	$12.40	June 5, 2012	500	Disposed
Dec. 7, 2010	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (800)	$9.76	May 30, 2011	800	Disposed
Nov. 15, 2010	ARTNA	Non-qualified Stock Option (Right to Buy)	Class A Non-voting Common Stock (5,950)	$9.76	May 30, 2011	5,950	Disposed
May 26, 2010	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (4,750)	$9.28	May 31, 2010	4,750	Disposed
May 18, 2010	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (6,750)	$18.61	May 18, 2020	6,750	Acquired
Feb. 24, 2010	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (2,000)	$9.28	May 31, 2010	2,000	Disposed
May 19, 2009	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (6,750)	$15.26	May 19, 2019	6,750	Acquired
May 12, 2009	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (1,800)	$8.50	May 18, 2009	1,800	Disposed
May 12, 2009	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (725)	$8.50	May 18, 2009	725	Disposed
May 11, 2009	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (400)	$8.50	May 18, 2009	400	Disposed
Feb. 27, 2009	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (1,000)	$8.50	May 18, 2009	1,000	Disposed
Oct. 8, 2008	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (2,825)	$8.50	May 18, 2009	2,825	Disposed
May 22, 2008	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (3,750)	$7.61	May 27, 2008	3,750	Disposed
May 14, 2008	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (6,750)	$18.43	May 14, 2018	6,750	Acquired
May 16, 2007	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (6,750)	$19.56	May 16, 2017	6,750	Acquired
May 8, 2007	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (750)	$6.90	May 28, 2007	750	Disposed
April 26, 2007	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (3,000)	$7.61	May 27, 2008	3,000	Disposed
April 10, 2007	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (1,500)	$6.90	May 28, 2007	1,500	Disposed
March 13, 2007	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (1,500)	$6.90	May 28, 2007	1,500	Disposed
Feb. 13, 2007	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (1,500)	$6.90	May 28, 2007	1,500	Disposed
Jan. 4, 2007	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (1,500)	$6.90	May 28, 2007	1,500	Disposed
May 12, 2006	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (4,500)	$31.67	May 12, 2016	4,500	Acquired
Dec. 20, 2005	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (7,500)	$29.55	Dec. 20, 2015	7,500	Acquired
Sept. 20, 2005	ARTNA	Incentive Stock Option (right to buy)	Class A Non-Voting Common Stock (4,400)	$17.89	May 30, 2006	4,400	Disposed
Sept. 16, 2005	ARTNA	Incentive Stock Option (right to buy)	Class A Non-Voting Common Stock (2,500)	$17.89	May 30, 2006	2,500	Disposed
Sept. 9, 2005	ARTNA	Incentive Stock Option (right to buy)	Class A Non-Voting Common Stock (600)	$0.00	May 30, 2006	600	Disposed
May 26, 2004	ARTNA	Non-Qualified Stock Option (right to buy)	Class A Non-Voting Common Stock (4,500)	$24.20	May 26, 2014	4,500	Acquired
May 10, 2004	ARTNA	Incentive Stock Option (right to buy)	Class A Non-Voting Common Stock (1,500)	$15.40	—	1,500	Disposed
Jan. 20, 2004	ARTNA	Incentive Stock Option (right to buy)	Class A Non-Voting Common Stock (7,500)	$9.42	May 14, 2006	7,500	Disposed
Dec. 2, 2003	ARTNA	Incentive Stock Option (right to buy)	Class A Non-Voting Common Stock (6,000)	$14.00	—	6,000	Disposed

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