Connie Matsui

Insider

First SEC filing: June 9, 2026 · Latest: June 9, 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.
Initial holdings The stakes this person held when they first started reporting.

Insider at

Insider transactions

1 buys (P) 0 sells (S) Net: $40,000 + 57 non-open-market transactions below Avg return of open purchases vs now: 172.1% 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

57 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
July 17, 2026	ARTL	A	136	—	—	136 Direct	—	Acquired	(price as of 2026-08-21)
June 5, 2026	STRO	A	10,000	—	—	10,000 Direct	—	Acquired	(price as of 2026-08-21)
Dec. 23, 2025	STRO	A	1,500	—	—	1,500 Direct	—	Acquired	(price as of 2026-08-21)
Oct. 15, 2025	STRO	P	50,000	$0.80	$40,000	50,000 Direct	—	Acquired	172.1% (price as of 2026-08-21)
Nov. 29, 2024	HALO	G	10,470	—	—	183,035 Direct	-5.41%	Disposed	(price as of 2026-08-21)
June 6, 2024	STRO	A	35,000	—	—	35,000 Direct	—	Acquired	(price as of 2026-08-21)
April 25, 2024	HALO	A	6,501	—	—	193,505 Direct	+3.48%	Acquired	(price as of 2026-08-21)
April 25, 2024	HALO	A	8,804	—	—	8,804 Direct	—	Acquired	(price as of 2026-08-21)
June 8, 2023	STRO	A	25,000	—	—	25,000 Direct	—	Acquired	(price as of 2026-08-21)
May 5, 2023	HALO	A	8,065	—	—	187,004 Direct	+4.51%	Acquired	(price as of 2026-08-21)
May 5, 2023	HALO	A	11,371	—	—	11,371 Direct	—	Acquired	(price as of 2026-08-21)
Nov. 16, 2022	HALO	G	9,250	—	—	178,939 Direct	-4.92%	Disposed	(price as of 2026-08-21)
June 6, 2022	STRO	A	18,500	—	—	18,500 Direct	—	Acquired	(price as of 2026-08-21)
May 5, 2022	HALO	A	6,206	—	—	188,189 Direct	+3.41%	Acquired	(price as of 2026-08-21)
Nov. 5, 2021	HALO	S	19,452	$40.13	$780,609	194,531 Direct	-9.09%	Disposed	166.9% (price as of 2026-08-21)
Nov. 5, 2021	HALO	S	12,548	$40.77	$511,582	181,983 Direct	-6.45%	Disposed	162.7% (price as of 2026-08-21)
June 3, 2021	STRO	A	18,500	—	—	18,500 Direct	—	Acquired	(price as of 2026-08-21)
May 5, 2021	HALO	A	5,230	—	—	213,983 Direct	+2.51%	Acquired	(price as of 2026-08-21)
Sept. 14, 2020	HALO	G	8,000	—	—	208,753 Direct	-3.69%	Disposed	(price as of 2026-08-21)
Sept. 11, 2020	HALO	S	32,000	$27.06	$865,920	216,753 Direct	-12.86%	Disposed	295.9% (price as of 2026-08-21)
June 5, 2020	STRO	A	12,000	—	—	12,000 Direct	—	Acquired	(price as of 2026-08-21)
April 30, 2020	HALO	A	8,829	—	—	248,753 Direct	+3.68%	Acquired	(price as of 2026-08-21)
June 24, 2019	STRO	A	23,076	—	—	23,076 Direct	—	Acquired	(price as of 2026-08-21)
May 2, 2019	HALO	A	12,173	—	—	239,924 Direct	+5.34%	Acquired	(price as of 2026-08-21)
Dec. 7, 2018	HALO	G	15,000	—	—	227,751 Direct	-6.18%	Disposed	(price as of 2026-08-21)
May 2, 2018	HALO	A	10,363	—	—	242,751 Direct	+4.46%	Acquired	(price as of 2026-08-21)
Sept. 21, 2017	HALO	G	15,000	—	—	232,388 Direct	-6.06%	Disposed	(price as of 2026-08-21)
May 8, 2017	HALO	M	10,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
May 8, 2017	HALO	M	10,000	$10.37	$103,700	247,388 Direct	+4.21%	Acquired	933.0% (price as of 2026-08-21)
May 4, 2017	HALO	A	14,135	—	—	237,388 Direct	+6.33%	Acquired	(price as of 2026-08-21)
May 4, 2016	HALO	A	20,202	—	—	223,253 Direct	+9.95%	Acquired	(price as of 2026-08-21)
Sept. 14, 2015	HALO	M	10,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Sept. 14, 2015	HALO	M	10,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Sept. 14, 2015	HALO	M	10,000	$4.94	$49,400	203,051 Direct	+5.18%	Acquired	2068.4% (price as of 2026-08-21)
Sept. 14, 2015	HALO	M	10,000	$2.33	$23,300	193,051 Direct	+5.46%	Acquired	4497.4% (price as of 2026-08-21)
May 6, 2015	HALO	A	13,175	—	—	183,051 Direct	+7.76%	Acquired	(price as of 2026-08-21)
May 13, 2014	HALO	A	24,876	—	—	169,876 Direct	+17.16%	Acquired	(price as of 2026-08-21)
May 5, 2011	HALO	A	20,000	—	—	105,000 Direct	+23.53%	Acquired	(price as of 2026-08-21)
May 15, 2007	HALO	A	10,000	$10.37	$103,700	20,000 Direct	+100.00%	Acquired	933.0% (price as of 2026-08-21)
May 15, 2007	HALO	A	15,000	$10.37	$155,550	30,000 Direct	+100.00%	Acquired	933.0% (price as of 2026-08-21)
Feb. 12, 2007	BIIB	A	11,000	—	—	11,000 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 12, 2007	BIIB	A	4,300	—	—	22,837 Direct	+23.20%	Acquired	(price as of 2026-08-21)
Feb. 6, 2007	BIIB	D	1,834	—	—	3,666 Direct	-33.35%	Disposed	(price as of 2026-08-21)
Feb. 6, 2007	BIIB	F	5,868	$48.94	$287,180	18,537 Direct	-24.04%	Disposed	340.6% (price as of 2026-08-21)
Feb. 6, 2007	BIIB	M	1,834	—	—	24,405 Direct	+8.13%	Acquired	(price as of 2026-08-21)
Jan. 16, 2007	BIIB	M	7,998	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Jan. 16, 2007	BIIB	M	16,825	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
Jan. 16, 2007	BIIB	S 10b5-1	24,823	$50.83	$1,261,753	22,571 Direct	-52.38%	Disposed	324.3% (price as of 2026-08-21)
Jan. 16, 2007	BIIB	M 10b5-1	7,998	$6.92	$55,346	47,394 Direct	+20.30%	Acquired	3016.3% (price as of 2026-08-21)
Jan. 16, 2007	BIIB	M 10b5-1	16,825	$7.72	$129,889	39,396 Direct	+74.54%	Acquired	2693.4% (price as of 2026-08-21)
Oct. 16, 2006	BIIB	M 10b5-1	40,000	—	—	16,825 Direct	-70.39%	Disposed	(price as of 2026-08-21)
Oct. 16, 2006	BIIB	S 10b5-1	2,500	$45.63	$114,075	22,571 Direct	-9.97%	Disposed	372.6% (price as of 2026-08-21)
Oct. 16, 2006	BIIB	S 10b5-1	5,000	$45.58	$227,900	25,071 Direct	-16.63%	Disposed	373.1% (price as of 2026-08-21)
Oct. 16, 2006	BIIB	S 10b5-1	12,500	$45.55	$569,375	30,071 Direct	-29.36%	Disposed	373.4% (price as of 2026-08-21)
Oct. 16, 2006	BIIB	S 10b5-1	2,500	$45.50	$113,750	42,571 Direct	-5.55%	Disposed	374.0% (price as of 2026-08-21)
Oct. 16, 2006	BIIB	S 10b5-1	2,500	$45.46	$113,650	45,071 Direct	-5.26%	Disposed	374.4% (price as of 2026-08-21)
Oct. 16, 2006	BIIB	S 10b5-1	7,500	$45.45	$340,875	47,571 Direct	-13.62%	Disposed	374.5% (price as of 2026-08-21)
Oct. 16, 2006	BIIB	S 10b5-1	7,500	$45.43	$340,725	55,071 Direct	-11.99%	Disposed	374.7% (price as of 2026-08-21)
Oct. 16, 2006	BIIB	M 10b5-1	40,000	$7.72	$308,800	62,571 Direct	+177.22%	Acquired	2693.4% (price as of 2026-08-21)
Sept. 14, 2006	BIIB	F	8,006	$43.39	$347,380	22,571 Direct	-26.18%	Disposed	397.0% (price as of 2026-08-21)
Sept. 14, 2006	BIIB	A	17,500	—	—	30,577 Direct	+133.82%	Acquired	(price as of 2026-08-21)
July 17, 2006	BIIB	M 10b5-1	40,000	—	—	56,825 Direct	-41.31%	Disposed	(price as of 2026-08-21)
July 17, 2006	BIIB	S 10b5-1	5,000	$42.85	$214,250	12,344 Direct	-28.83%	Disposed	403.3% (price as of 2026-08-21)
July 17, 2006	BIIB	S 10b5-1	5,000	$42.80	$214,000	17,344 Direct	-22.38%	Disposed	403.9% (price as of 2026-08-21)
July 17, 2006	BIIB	S 10b5-1	2,500	$42.70	$106,750	22,344 Direct	-10.06%	Disposed	405.0% (price as of 2026-08-21)
July 17, 2006	BIIB	S 10b5-1	10,000	$42.70	$427,000	24,844 Direct	-28.70%	Disposed	405.0% (price as of 2026-08-21)
July 17, 2006	BIIB	S 10b5-1	5,000	$42.67	$213,350	34,844 Direct	-12.55%	Disposed	405.4% (price as of 2026-08-21)
July 17, 2006	BIIB	S 10b5-1	5,000	$42.53	$212,650	39,844 Direct	-11.15%	Disposed	407.1% (price as of 2026-08-21)
July 17, 2006	BIIB	S 10b5-1	7,500	$42.47	$318,525	44,844 Direct	-14.33%	Disposed	407.8% (price as of 2026-08-21)
July 17, 2006	BIIB	M 10b5-1	40,000	$7.72	$308,800	52,344 Direct	+324.04%	Acquired	2693.4% (price as of 2026-08-21)
April 28, 2006	BIIB	M 10b5-1	40,000	—	—	96,825 Direct	-29.23%	Disposed	(price as of 2026-08-21)
April 28, 2006	BIIB	S 10b5-1	10,000	$45.35	$453,500	96,825 Direct	-9.36%	Disposed	375.5% (price as of 2026-08-21)
April 28, 2006	BIIB	S 10b5-1	7,500	$45.25	$339,375	106,825 Direct	-6.56%	Disposed	376.6% (price as of 2026-08-21)
April 28, 2006	BIIB	S 10b5-1	7,500	$45.21	$339,075	114,325 Direct	-6.16%	Disposed	377.0% (price as of 2026-08-21)
April 28, 2006	BIIB	S 10b5-1	5,000	$45.11	$225,550	121,825 Direct	-3.94%	Disposed	378.1% (price as of 2026-08-21)
April 28, 2006	BIIB	S 10b5-1	10,000	$44.92	$449,200	126,825 Direct	-7.31%	Disposed	380.1% (price as of 2026-08-21)
April 28, 2006	BIIB	M 10b5-1	40,000	$7.72	$308,800	136,825 Direct	+41.31%	Acquired	2693.4% (price as of 2026-08-21)
Feb. 6, 2006	BIIB	A	5,500	—	—	5,500 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 6, 2006	BIIB	A	13,600	—	—	13,600 Direct	—	Acquired	(price as of 2026-08-21)
Oct. 12, 2005	BIIB	S 10b5-1	5,000	$36.74	$183,700	11,667 Direct	-30.00%	Disposed	487.0% (price as of 2026-08-21)
Oct. 12, 2005	BIIB	S 10b5-1	2,500	$36.67	$91,675	16,667 Direct	-13.04%	Disposed	488.1% (price as of 2026-08-21)
Oct. 12, 2005	BIIB	S 10b5-1	2,500	$36.60	$91,500	19,167 Direct	-11.54%	Disposed	489.2% (price as of 2026-08-21)
Oct. 12, 2005	BIIB	S 10b5-1	7,500	$36.53	$273,975	21,667 Direct	-25.71%	Disposed	490.3% (price as of 2026-08-21)
Oct. 12, 2005	BIIB	S 10b5-1	2,500	$36.50	$91,250	29,167 Direct	-7.89%	Disposed	490.8% (price as of 2026-08-21)
Oct. 12, 2005	BIIB	S 10b5-1	18,771	$36.36	$682,514	31,667 Direct	-37.22%	Disposed	493.1% (price as of 2026-08-21)
Oct. 12, 2005	BIIB	M	38,771	$7.72	$299,312	50,438 Direct	+332.31%	Acquired	2693.4% (price as of 2026-08-21)
Oct. 12, 2005	BIIB	S 10b5-1	38,771	—	—	136,825 Direct	-22.08%	Disposed	(price as of 2026-08-21)
Oct. 12, 2005	BIIB	S 10b5-1	16,229	$36.36	$590,086	39,610 Indirect	-29.06%	Disposed	493.1% (price as of 2026-08-21)
Oct. 12, 2005	BIIB	S 10b5-1	2,500	$36.50	$91,250	55,839 Indirect	-4.29%	Disposed	490.8% (price as of 2026-08-21)
Oct. 12, 2005	BIIB	S 10b5-1	7,500	$36.55	$274,125	58,339 Indirect	-11.39%	Disposed	490.0% (price as of 2026-08-21)
Oct. 12, 2005	BIIB	S 10b5-1	2,500	$36.60	$91,500	65,839 Indirect	-3.66%	Disposed	489.2% (price as of 2026-08-21)
Oct. 12, 2005	BIIB	S 10b5-1	2,500	$36.67	$91,675	68,339 Indirect	-3.53%	Disposed	488.1% (price as of 2026-08-21)
Oct. 12, 2005	BIIB	S 10b5-1	5,000	$36.74	$183,700	70,839 Indirect	-6.59%	Disposed	487.0% (price as of 2026-08-21)
Oct. 12, 2005	BIIB	S 10b5-1	5,000	$36.74	$183,700	136,825 Direct	-3.53%	Disposed	487.0% (price as of 2026-08-21)
Oct. 12, 2005	BIIB	S 10b5-1	2,500	$36.67	$91,675	141,825 Direct	-1.73%	Disposed	488.1% (price as of 2026-08-21)
May 18, 2004	BIIB	S	20,000	$59.05	$1,181,000	170,274 Direct	-10.51%	Disposed	265.2% (price as of 2026-08-21)
May 18, 2004	BIIB	S	10,000	$59.09	$590,900	190,274 Direct	-4.99%	Disposed	265.0% (price as of 2026-08-21)
May 18, 2004	BIIB	S	10,000	$59.03	$590,300	200,274 Direct	-4.76%	Disposed	265.3% (price as of 2026-08-21)
May 18, 2004	BIIB	S	20,000	$59.02	$1,180,400	210,274 Direct	-8.69%	Disposed	265.4% (price as of 2026-08-21)
May 18, 2004	BIIB	M	60,000	$6.92	$415,200	230,274 Direct	+35.24%	Acquired	3016.3% (price as of 2026-08-21)

Showing latest 100 of 160 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
July 17, 2026	ARTL	Stock Option (right to buy)	Common Stock (136)	$1.15	July 17, 2036	136	Acquired
June 5, 2026	STRO	Stock Option (right to buy)	Common Stock (10,000)	$26.09	June 5, 2036	10,000	Acquired
Dec. 23, 2025	STRO	Stock Option (right to buy)	Common Stock (1,500)	$10.38	Dec. 23, 2035	1,500	Acquired
June 6, 2024	STRO	Stock Option (right to buy)	Common Stock (35,000)	$3.76	June 6, 2034	35,000	Acquired
April 25, 2024	HALO	Option to Purchase Common Stock	Common Stock (8,804)	$38.46	April 25, 2034	8,804	Acquired
June 8, 2023	STRO	Stock Option (right to buy)	Common Stock (25,000)	$5.12	June 8, 2033	25,000	Acquired
May 5, 2023	HALO	Option to Purchase Common Stock	Common Stock (11,371)	$31.00	May 5, 2033	11,371	Acquired
June 6, 2022	STRO	Stock Option (right to buy)	Common Stock (18,500)	$4.44	June 5, 2032	18,500	Acquired
June 3, 2021	STRO	Stock Option (right to buy)	Common Stock (18,500)	$18.21	June 2, 2031	18,500	Acquired
June 5, 2020	STRO	Stock Option (right to buy)	Common Stock (12,000)	$9.83	June 4, 2030	12,000	Acquired
June 24, 2019	STRO	Stock Option (right to buy Common Stock)	Common Stock (23,076)	$11.68	June 24, 2029	23,076	Acquired
May 8, 2017	HALO	Options to Purchase Common Stock	Common Stock (10,000)	$10.37	May 15, 2017	10,000	Disposed
Sept. 14, 2015	HALO	Options to Purchase Common Stock	Common Stock (10,000)	$4.94	May 8, 2018	10,000	Disposed
Sept. 14, 2015	HALO	Options to Purchase Common Stock	Common Stock (10,000)	$2.33	July 27, 2016	10,000	Disposed
May 15, 2007	HALO	Option to Purchase Common Stock	Common Stock (10,000)	$10.37	May 15, 2017	10,000	Acquired
Feb. 12, 2007	BIIB	Stock Option (right-to-buy) [F2]	Common Stock (11,000)	$49.31	Feb. 11, 2007	11,000	Acquired
Feb. 6, 2007	BIIB	Restricted Stock Unit	Common Stock (1,834)	—	Feb. 6, 2007	1,834	Disposed
Jan. 16, 2007	BIIB	Stock Option (right-to-buy)	Common Stock (7,998)	$6.92	Feb. 4, 2008	7,998	Disposed
Jan. 16, 2007	BIIB	Stock Option (right-to-buy)	Common Stock (16,825)	$7.72	Jan. 12, 2009	16,825	Disposed
Oct. 16, 2006	BIIB	Stock Option (right to buy) [F2]	Common Stock (40,000)	$7.72	Jan. 12, 2009	40,000	Disposed
July 17, 2006	BIIB	Stock Option (right-to-buy) [F2]	Common Stock (40,000)	$7.72	Jan. 12, 2009	40,000	Disposed
April 28, 2006	BIIB	Stock Option (right-to-buy) [F3]	Common Stock (40,000)	$7.72	Jan. 12, 2009	40,000	Disposed
Feb. 6, 2006	BIIB	Restricted Stock Units	Common Stock (5,500)	—	—	5,500	Acquired
Feb. 6, 2006	BIIB	Stock Option (right-to-buy) [F1]	Common Stock (13,600)	$44.24	Feb. 5, 2016	13,600	Acquired
Oct. 12, 2005	BIIB	Stock Option (right-to-buy) [F2]	Common Stock (38,771)	$7.72	Jan. 13, 2009	38,771	Disposed
Oct. 12, 2005	BIIB	Stock Option (right-to-buy) [F2]	Common Stock (38,771)	$7.72	Jan. 13, 2009	38,771	Disposed
Feb. 17, 2005	BIIB	Stock Option (right-to-buy) [F1]	Common Stock (45,000)	$67.57	Feb. 17, 2015	45,000	Acquired
Aug. 20, 2004	BIIB	Stock Option (right-to-buy) [F1]	Common Stock (80,000)	$6.92	Feb. 5, 2008	80,000	Disposed
May 18, 2004	BIIB	Stock Option (right-to-buy) [F1]	Common Stock (20,000)	$6.92	Feb. 5, 2008	20,000	Disposed
May 18, 2004	BIIB	Stock Option (right-to-buy) [F1]	Common Stock (10,000)	$6.92	Feb. 5, 2008	10,000	Disposed
May 18, 2004	BIIB	Stock Option (right-to-buy) [F1]	Common Stock (10,000)	$6.92	Feb. 5, 2008	10,000	Disposed
May 18, 2004	BIIB	Stock Option (right-to-buy) [F1]	Common Stock (20,000)	$6.92	Feb. 5, 2008	20,000	Disposed
Feb. 6, 2004	BIIB	NQ Stock Option (right to buy)	Common Stock (32,970)	$43.50	Feb. 6, 2014	32,970	Acquired
Nov. 25, 2003	BIIB	Incentive Stock Option (right to buy) [F1]	Common Stock (3,938)	$7.72	Jan. 12, 2009	3,938	Disposed
Nov. 19, 2003	BIIB	Incentive Stock Option (right to buy) [F1]	Common Stock (17,426)	$3.50	Jan. 14, 2007	17,426	Disposed
Nov. 19, 2003	BIIB	Incentive Stock Option (right to buy) [F1]	Common Stock (600)	$6.31	Nov. 18, 2007	600	Disposed
Nov. 19, 2003	BIIB	Incentive Stock Option (right to buy) [F1]	Common Stock (21,974)	$6.92	Feb. 4, 2008	21,974	Disposed

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

Initial ownership (Form 3) 4 holdings

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

Date	Ticker	Security	Shares	Ownership
June 26, 2019	STRO	No securities beneficially held	0	Direct
June 21, 2019	ARTL	Common Stock	15,000	Direct
July 31, 2006	HALO	Common Stock	15,000	Direct
July 31, 2006	HALO	Option to Purchase Common Stock→ Common Stock (10,000)	10,000	Direct