John M Siebert

CIK 1190558 · View on SEC EDGAR ↗

Insider

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

Insider at

SUPN buying March 21, 2013

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 41 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

41 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 23, 2024	SUPN	D	3,886	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 23, 2024	SUPN	A	3,886	—	—	87,943 Direct	+4.62%	Acquired	(price as of 2026-08-20)
Feb. 22, 2024	SUPN	A	5,369	—	—	5,369 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 22, 2024	SUPN	A	8,252	—	—	8,252 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 23, 2023	SUPN	A	3,886	—	—	3,886 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 23, 2023	SUPN	A	6,293	—	—	6,293 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 22, 2023	SUPN	D	3,882	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 22, 2023	SUPN	A	3,882	—	—	84,057 Direct	+4.84%	Acquired	(price as of 2026-08-20)
Feb. 22, 2022	SUPN	A	3,882	—	—	3,882 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 22, 2022	SUPN	A	6,847	—	—	6,847 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 19, 2022	SUPN	D	4,222	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 19, 2022	SUPN	A	4,222	—	—	80,175 Direct	+5.56%	Acquired	(price as of 2026-08-20)
Aug. 11, 2021	SUPN	M	15,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 11, 2021	SUPN	M	15,000	$12.98	$194,700	75,953 Direct	+24.61%	Acquired	268.7% (price as of 2026-08-20)
Feb. 19, 2021	SUPN	A	4,222	—	—	4,222 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 19, 2021	SUPN	A	7,365	—	—	7,365 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 21, 2020	SUPN	A	5,211	$23.99	$125,012	60,953 Direct	+9.35%	Acquired	99.5% (price as of 2026-08-20)
Feb. 21, 2020	SUPN	A	9,305	—	—	9,305 Direct	—	Acquired	(price as of 2026-08-20)
June 20, 2019	SUPN	M	10,000	$9.13	$91,300	55,742 Direct	+21.86%	Acquired	424.2% (price as of 2026-08-20)
June 20, 2019	SUPN	M	10,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
April 25, 2019	SUPN	M	10,000	—	—	10,000 Direct	-50.00%	Disposed	(price as of 2026-08-20)
April 25, 2019	SUPN	M	10,000	$9.13	$91,300	45,742 Direct	+27.98%	Acquired	424.2% (price as of 2026-08-20)
Feb. 22, 2019	SUPN	A	12,427	—	—	12,427 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 22, 2019	SUPN	A	12,427	—	—	12,427 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 20, 2018	SUPN	M	7,457	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 20, 2018	SUPN	M	8,722	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 20, 2018	SUPN	M	7,457	$9.24	$68,903	35,742 Direct	+26.36%	Acquired	418.0% (price as of 2026-08-20)
Aug. 20, 2018	SUPN	M	8,722	$7.90	$68,904	28,285 Direct	+44.58%	Acquired	505.8% (price as of 2026-08-20)
Feb. 23, 2018	SUPN	A	8,613	—	—	8,613 Direct	—	Acquired	(price as of 2026-08-20)
June 13, 2017	SUPN	A	6,036	—	—	6,036 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 24, 2017	SUPN	A	7,905	—	—	7,905 Direct	—	Acquired	(price as of 2026-08-20)
March 1, 2016	SUPN	A	15,000	—	—	15,000 Direct	—	Acquired	(price as of 2026-08-20)
March 3, 2015	SUPN	A	20,000	—	—	20,000 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 16, 2014	SUPN	M	2,188	$4.24	$9,277	19,563 Direct	+12.59%	Acquired	1028.8% (price as of 2026-08-20)
Dec. 16, 2014	SUPN	M	2,188	—	—	2,187 Direct	-50.01%	Disposed	(price as of 2026-08-20)
Jan. 21, 2014	SUPN	A	7,457	—	—	7,457 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 12, 2013	SUPN	M	2,187	—	—	4,375 Direct	-33.33%	Disposed	(price as of 2026-08-20)
Dec. 12, 2013	SUPN	M	2,187	$4.24	$9,273	17,375 Direct	+14.40%	Acquired	1028.8% (price as of 2026-08-20)
March 21, 2013	SUPN	P	3,000	$5.50	$16,500	15,188 Direct	+24.61%	Acquired	770.2% (price as of 2026-08-20)
Feb. 5, 2013	SUPN	A	8,722	—	—	8,722 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 14, 2012	SUPN	M	2,188	—	—	6,562 Direct	-25.01%	Disposed	(price as of 2026-08-20)
Dec. 14, 2012	SUPN	M	2,188	$4.24	$9,277	12,188 Direct	+21.88%	Acquired	1028.8% (price as of 2026-08-20)
Dec. 4, 2012	SUPN	P	7,000	$8.14	$56,980	10,000 Direct	+233.33%	Acquired	488.0% (price as of 2026-08-20)
May 4, 2012	SUPN	P	3,000	$5.00	$15,000	3,000 Direct	—	Acquired	857.2% (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. 23, 2024	SUPN	Restricted Stock Unit	Common Stock (3,886)	—	—	3,886	Disposed
Feb. 22, 2024	SUPN	Restricted Stock Units	Common Stock (5,369)	—	—	5,369	Acquired
Feb. 22, 2024	SUPN	Director Stock Option (Right to Buy)	Common Stock (8,252)	$27.94	Feb. 22, 2034	8,252	Acquired
Feb. 23, 2023	SUPN	Restricted Stock Units	Common Stock (3,886)	—	—	3,886	Acquired
Feb. 23, 2023	SUPN	Director Stock Option (Right to Buy)	Common Stock (6,293)	$38.60	Feb. 23, 2033	6,293	Acquired
Feb. 22, 2023	SUPN	Restricted Stock Units	Common Stock (3,882)	—	—	3,882	Disposed
Feb. 22, 2022	SUPN	Restricted Stock Units	Common Stock (3,882)	—	—	3,882	Acquired
Feb. 22, 2022	SUPN	Director Stock Option (Right to Buy)	Common Stock (6,847)	$32.20	Feb. 22, 2032	6,847	Acquired
Feb. 19, 2022	SUPN	Restricted Stock Units	Common Stock (4,222)	—	—	4,222	Disposed
Aug. 11, 2021	SUPN	Director Stock Option (Right to Buy)	Common Stock (15,000)	$12.98	March 1, 2026	15,000	Disposed
Feb. 19, 2021	SUPN	Restricted Stock Units	Common Stock (4,222)	—	—	4,222	Acquired
Feb. 19, 2021	SUPN	Director Stock Option (Right to Buy)	Common Stock (7,365)	$29.61	Feb. 19, 2031	7,365	Acquired
Feb. 21, 2020	SUPN	Director Stock Option (Right to Buy)	Common Stock (9,305)	$23.99	Feb. 21, 2030	9,305	Acquired
June 20, 2019	SUPN	Director Stock Option (Right to Buy)	Common Stock (10,000)	$9.13	March 3, 2025	10,000	Disposed
April 25, 2019	SUPN	Director Stock Option (Right to Buy)	Common Stock (10,000)	$9.13	March 3, 2025	10,000	Disposed
Feb. 22, 2019	SUPN	Director Stock Option (Right to Buy)	Common Stock (12,427)	$36.75	Feb. 22, 2029	12,427	Acquired
Feb. 22, 2019	SUPN	Director Stock Option (Right to Buy)	Common Stock (12,427)	$36.75	Feb. 22, 2029	12,427	Acquired
Aug. 20, 2018	SUPN	Director Stock Option (Right to Buy)	Common Stock (7,457)	$9.24	Jan. 21, 2024	7,457	Disposed
Aug. 20, 2018	SUPN	Director Stock Option (Right to Buy)	Common Stock (8,722)	$7.90	Feb. 5, 2023	8,722	Disposed
Feb. 23, 2018	SUPN	Director Stock Option (Right to Buy)	Common Stock (8,613)	$39.40	Feb. 23, 2028	8,613	Acquired
June 13, 2017	SUPN	Director Stock Option (Right to Buy)	Common Stock (6,036)	$38.60	June 13, 2027	6,036	Acquired
Feb. 24, 2017	SUPN	Director Stock Option (Right to Buy)	Common Stock (7,905)	$25.30	Feb. 24, 2027	7,905	Acquired
March 1, 2016	SUPN	Director Stock Option (Right to Buy)	Common Stock (15,000)	$12.98	March 1, 2026	15,000	Acquired
March 3, 2015	SUPN	Director Stock Option (Right to Buy)	Common Stock (20,000)	$9.13	March 3, 2025	20,000	Acquired
Dec. 16, 2014	SUPN	Director Stock Option (Right to Buy)	Common Stock (2,188)	$4.24	Oct. 14, 2021	2,188	Disposed
Jan. 21, 2014	SUPN	Director Stock Option (Right to Buy)	Common Stock (7,457)	$9.24	Jan. 21, 2024	7,457	Acquired
Dec. 12, 2013	SUPN	Director Stock Option (Right to Buy)	Common Stock (2,187)	$4.24	Oct. 14, 2021	2,187	Disposed
Feb. 5, 2013	SUPN	Director Stock Option (Right to Buy)	Common Stock (8,722)	$7.90	Feb. 5, 2023	8,722	Acquired
Dec. 14, 2012	SUPN	Stock Option (right to buy)	Common Stock (2,188)	$4.24	Oct. 14, 2021	2,188	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
April 30, 2012	SUPN	Stock Option (right to buy)→ Common Stock (8,750)	8,750	Direct