Kenneth Dipietro

Insider

First SEC filing: Jan. 30, 2012 · Latest: Jan. 30, 2012

On this page

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.
Compensation Executive pay disclosed in company proxy statements.

Insider at

BIIB selling March 16, 2015

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 58 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

58 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 28, 2017	BIIB	J	1	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 28, 2017	BIIB	M	2,300	—	—	1 Direct	-99.96%	Disposed	(price as of 2026-08-20)
Feb. 28, 2017	BIIB	M	1,174	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 28, 2017	BIIB	M	1,494	—	—	5,392 Direct	-21.70%	Disposed	(price as of 2026-08-20)
Feb. 28, 2017	BIIB	M	728	—	—	1,948 Direct	-27.20%	Disposed	(price as of 2026-08-20)
Feb. 28, 2017	BIIB	J	1,216	—	—	2,676 Direct	-31.24%	Disposed	(price as of 2026-08-20)
Feb. 28, 2017	BIIB	J	1,198	—	—	6,886 Direct	-14.82%	Disposed	(price as of 2026-08-20)
Feb. 28, 2017	BIIB	J	1,378	—	—	1,174 Direct	-54.00%	Disposed	(price as of 2026-08-20)
Feb. 28, 2017	BIIB	F	1,083	$274.76	$297,565	7,177 Direct	-13.11%	Disposed	-19.9% (price as of 2026-08-20)
Feb. 28, 2017	BIIB	M	2,300	—	—	8,260 Direct	+38.59%	Acquired	(price as of 2026-08-20)
Feb. 28, 2017	BIIB	F	553	$274.76	$151,942	5,960 Direct	-8.49%	Disposed	-19.9% (price as of 2026-08-20)
Feb. 28, 2017	BIIB	M	1,174	—	—	6,513 Direct	+21.99%	Acquired	(price as of 2026-08-20)
Feb. 28, 2017	BIIB	F	485	$287.63	$139,501	5,339 Direct	-8.33%	Disposed	-23.5% (price as of 2026-08-20)
Feb. 28, 2017	BIIB	M	1,494	—	—	5,824 Direct	+34.50%	Acquired	(price as of 2026-08-20)
Feb. 28, 2017	BIIB	F	335	$284.75	$95,391	4,330 Direct	-7.18%	Disposed	-22.7% (price as of 2026-08-20)
Feb. 28, 2017	BIIB	M	728	—	—	4,665 Direct	+18.49%	Acquired	(price as of 2026-08-20)
Feb. 15, 2017	BIIB	A	6,380	—	—	6,380 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 23, 2016	BIIB	J	1,262	—	—	3,802 Direct	-24.92%	Disposed	(price as of 2026-08-20)
Feb. 23, 2016	BIIB	M	636	—	—	5,064 Direct	-11.16%	Disposed	(price as of 2026-08-20)
Feb. 23, 2016	BIIB	F	300	$258.99	$77,697	3,937 Direct	-7.08%	Disposed	-15.1% (price as of 2026-08-20)
Feb. 23, 2016	BIIB	M	636	—	—	4,237 Direct	+17.66%	Acquired	(price as of 2026-08-20)
Feb. 22, 2016	BIIB	A	7,900	—	—	7,900 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 12, 2016	BIIB	J	1,418	—	—	2,494 Direct	-36.25%	Disposed	(price as of 2026-08-20)
Feb. 12, 2016	BIIB	M	2,246	—	—	2,249 Direct	-49.97%	Disposed	(price as of 2026-08-20)
Feb. 12, 2016	BIIB	M	1,070	—	—	3,912 Direct	-21.48%	Disposed	(price as of 2026-08-20)
Feb. 12, 2016	BIIB	F	865	$247.22	$213,845	3,601 Direct	-19.37%	Disposed	-11.0% (price as of 2026-08-20)
Feb. 12, 2016	BIIB	M	2,246	—	—	4,466 Direct	+101.17%	Acquired	(price as of 2026-08-20)
Feb. 12, 2016	BIIB	F	504	$247.22	$124,599	2,220 Direct	-18.50%	Disposed	-11.0% (price as of 2026-08-20)
Feb. 12, 2016	BIIB	M	1,070	—	—	2,724 Direct	+64.69%	Acquired	(price as of 2026-08-20)
Feb. 1, 2016	BIIB	M	2,466	—	—	1 Direct	-99.96%	Disposed	(price as of 2026-08-20)
Feb. 1, 2016	BIIB	M	2,466	—	—	2,466 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 1, 2016	BIIB	M	2,466	—	—	1 Direct	-99.96%	Disposed	(price as of 2026-08-20)
Feb. 1, 2016	BIIB	F	812	$273.45	$222,041	1,654 Direct	-32.93%	Disposed	-19.6% (price as of 2026-08-20)
Feb. 1, 2016	BIIB	M	2,466	$273.45	$674,328	2,466 Direct	—	Acquired	-19.6% (price as of 2026-08-20)
March 16, 2015	BIIB	S 10b5-1	803	$415.46	$333,614	0 Direct	-100.00%	Disposed	-47.0% (price as of 2026-08-20)
Feb. 23, 2015	BIIB	A	5,700	—	—	5,700 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 17, 2015	BIIB	S 10b5-1	1,188	$389.11	$462,263	803 Direct	-59.67%	Disposed	-43.5% (price as of 2026-08-20)
Feb. 12, 2015	BIIB	J	970	—	—	4,982 Direct	-16.30%	Disposed	(price as of 2026-08-20)
Feb. 12, 2015	BIIB	M	1,518	—	—	5,952 Direct	-20.32%	Disposed	(price as of 2026-08-20)
Feb. 12, 2015	BIIB	M	2,246	—	—	4,495 Direct	-33.32%	Disposed	(price as of 2026-08-20)
Feb. 12, 2015	BIIB	F	715	$392.11	$280,359	1,991 Direct	-26.42%	Disposed	-43.9% (price as of 2026-08-20)
Feb. 12, 2015	BIIB	M	1,518	—	—	2,706 Direct	+127.78%	Acquired	(price as of 2026-08-20)
Feb. 12, 2015	BIIB	F	1,058	$392.11	$414,852	1,188 Direct	-47.11%	Disposed	-43.9% (price as of 2026-08-20)
Feb. 12, 2015	BIIB	M	2,246	—	—	2,246 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 2, 2015	BIIB	S 10b5-1	1,656	$389.03	$644,234	0 Direct	-100.00%	Disposed	-43.5% (price as of 2026-08-20)
Feb. 1, 2015	BIIB	M	2,463	—	—	2,467 Direct	-49.96%	Disposed	(price as of 2026-08-20)
Feb. 1, 2015	BIIB	F	807	$389.16	$314,052	1,656 Direct	-32.76%	Disposed	-43.5% (price as of 2026-08-20)
Feb. 1, 2015	BIIB	M	2,463	—	—	2,463 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 13, 2014	BIIB	S 10b5-1	1,290	$316.81	$408,685	0 Direct	-100.00%	Disposed	-30.6% (price as of 2026-08-20)
Feb. 12, 2014	BIIB	A	7,470	—	—	7,470 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 12, 2014	BIIB	M	2,246	—	—	6,741 Direct	-24.99%	Disposed	(price as of 2026-08-20)
Feb. 12, 2014	BIIB	F	956	$323.04	$308,826	1,290 Direct	-42.56%	Disposed	-31.9% (price as of 2026-08-20)
Feb. 12, 2014	BIIB	M	2,246	—	—	2,246 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 4, 2014	BIIB	S 10b5-1	1,655	$299.01	$494,862	0 Direct	-100.00%	Disposed	-26.4% (price as of 2026-08-20)
Feb. 1, 2014	BIIB	M	2,463	—	—	4,930 Direct	-33.32%	Disposed	(price as of 2026-08-20)
Feb. 1, 2014	BIIB	F	808	$312.64	$252,613	1,655 Direct	-32.81%	Disposed	-29.6% (price as of 2026-08-20)
Feb. 1, 2014	BIIB	M	2,463	—	—	2,463 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 30, 2013	BIIB	S 10b5-1	1,440	$242.00	$348,480	0 Direct	-100.00%	Disposed	-9.1% (price as of 2026-08-20)
Feb. 12, 2013	BIIB	A	8,987	—	—	8,987 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 1, 2013	BIIB	J	312	—	—	7,393 Direct	-4.05%	Disposed	(price as of 2026-08-20)
Feb. 1, 2013	BIIB	M	2,151	—	—	7,705 Direct	-21.82%	Disposed	(price as of 2026-08-20)
Feb. 1, 2013	BIIB	F	711	$157.30	$111,840	1,440 Direct	-33.05%	Disposed	39.9% (price as of 2026-08-20)
Feb. 1, 2013	BIIB	M	2,151	—	—	2,151 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 1, 2012	BIIB	A	9,856	—	—	9,856 Direct	—	Acquired	(price as of 2026-08-20)

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
Feb. 28, 2017	BIIB	Restricted Stock Unit	Common Stock (1)	$0.00	Feb. 12, 2017	1	Disposed
Feb. 28, 2017	BIIB	Restricted Stock Unit	Common Stock (2,300)	$0.00	Feb. 12, 2017	2,300	Disposed
Feb. 28, 2017	BIIB	Restricted Stock Unit	Common Stock	$0.00	Feb. 12, 2017	1,174	Disposed
Feb. 28, 2017	BIIB	Restricted Stock Unit	Common Stock	$0.00	Feb. 22, 2019	1,494	Disposed
Feb. 28, 2017	BIIB	Restricted Stock Unit	Common Stock	$0.00	Feb. 23, 2018	728	Disposed
Feb. 28, 2017	BIIB	Restricted Stock Unit	Common Stock (1,216)	$0.00	Feb. 23, 2018	1,216	Disposed
Feb. 28, 2017	BIIB	Restricted Stock Unit	Common Stock (1,198)	$0.00	Feb. 22, 2019	1,198	Disposed
Feb. 28, 2017	BIIB	Restricted Stock Unit	Common Stock (1,378)	$0.00	Feb. 12, 2017	1,378	Disposed
Feb. 15, 2017	BIIB	Restricted Stock Unit	Common Stock (6,380)	$0.00	Feb. 15, 2020	6,380	Acquired
Feb. 23, 2016	BIIB	Restricted Stock Unit	Common Stock (1,262)	$0.00	Feb. 23, 2018	1,262	Disposed
Feb. 23, 2016	BIIB	Restricted Stock Unit	Common Stock (636)	$0.00	Feb. 23, 2018	636	Disposed
Feb. 22, 2016	BIIB	Restricted Stock Unit	Common Stock (7,900)	$0.00	Feb. 22, 2019	7,900	Acquired
Feb. 12, 2016	BIIB	Restricted Stock Unit	Common Stock (1,418)	$0.00	Feb. 12, 2017	1,418	Disposed
Feb. 12, 2016	BIIB	Restricted Stock Unit	Common Stock (2,246)	$0.00	Feb. 12, 2017	2,246	Disposed
Feb. 12, 2016	BIIB	Restricted Stock Unit	Common Stock (1,070)	$0.00	Feb. 12, 2017	1,070	Disposed
Feb. 1, 2016	BIIB	Restricted Stock Unit	Common Stock (2,466)	$0.00	Feb. 1, 2016	2,466	Disposed
Feb. 1, 2016	BIIB	Restricted Stock Unit	Common Stock (2,466)	$0.00	Feb. 1, 2016	2,466	Disposed
Feb. 23, 2015	BIIB	Restricted Stock Unit	Common Stock (5,700)	$0.00	Feb. 23, 2018	5,700	Acquired
Feb. 12, 2015	BIIB	Restricted Stock Unit	Common Stock (970)	$0.00	Feb. 12, 2017	970	Disposed
Feb. 12, 2015	BIIB	Restricted Stock Unit	Common Stock (1,518)	$0.00	Feb. 12, 2017	1,518	Disposed
Feb. 12, 2015	BIIB	Restricted Stock Unit	Common Stock (2,246)	$0.00	Feb. 12, 2017	2,246	Disposed
Feb. 1, 2015	BIIB	Restricted Stock Unit	Common Stock (2,463)	$0.00	Feb. 1, 2016	2,463	Disposed
Feb. 12, 2014	BIIB	Restricted Stock Unit	Common Stock (7,470)	$0.00	Feb. 12, 2017	7,470	Acquired
Feb. 12, 2014	BIIB	Restricted Stock Unit	Common Stock (2,246)	$0.00	Feb. 12, 2017	2,246	Disposed
Feb. 1, 2014	BIIB	Restricted Stock Unit	Common Stock (2,463)	$0.00	Feb. 1, 2016	2,463	Disposed
Feb. 12, 2013	BIIB	Restricted Stock Unit	Common Stock (8,987)	$0.00	Feb. 12, 2017	8,987	Acquired
Feb. 1, 2013	BIIB	Restricted Stock Unit	Common Stock (312)	$0.00	Feb. 1, 2016	312	Disposed
Feb. 1, 2013	BIIB	Restricted Stock Unit	Common Stock (2,151)	$0.00	Feb. 1, 2016	2,151	Disposed
Feb. 1, 2012	BIIB	Restricted Stock Unit	Common Stock (9,856)	$0.00	Feb. 1, 2016	9,856	Acquired

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
Jan. 30, 2012	BIIB	Common Stock	0	Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

BIIB

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2017	$568,319	—	$2,467,730	—	—	$149	$2,187,069	$5,223,267
2012	$486,539	$100,000	—	—	$445,667	$11	$418,648	$3,254,518

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.