Karl Guelich

CIK 1201940 · View on SEC EDGAR ↗

Insider

First SEC filing: March 6, 2006 · Latest: March 6, 2006

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.

Insider at

FFIV selling Oct. 27, 2011

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 35 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

35 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 15, 2012	FFIV	A	1,512	—	—	1,512 Direct	—	Acquired	(price as of 2026-08-21)
March 14, 2012	FFIV	M	1,836	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
March 14, 2012	FFIV	M	1,836	—	—	10,386 Direct	+21.47%	Acquired	(price as of 2026-08-21)
March 14, 2012	FFIV	M	1,836	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
March 14, 2012	FFIV	M	1,836	—	—	10,386 Direct	+21.47%	Acquired	(price as of 2026-08-21)
Oct. 27, 2011	FFIV	S	9,709	$103.11	$1,001,095	8,550 Direct	-53.17%	Disposed	267.6% (price as of 2026-08-21)
March 14, 2011	FFIV	A	1,836	—	—	1,836 Direct	—	Acquired	(price as of 2026-08-21)
March 11, 2011	FFIV	M	3,138	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
March 11, 2011	FFIV	M	3,138	—	—	18,259 Direct	+20.75%	Acquired	(price as of 2026-08-21)
Nov. 1, 2010	FFIV	M	15,000	$26.86	$402,900	0 Direct	-100.00%	Disposed	1311.1% (price as of 2026-08-21)
Nov. 1, 2010	FFIV	S	14,900	$115.77	$1,724,973	15,121 Direct	-49.63%	Disposed	227.4% (price as of 2026-08-21)
Nov. 1, 2010	FFIV	S	100	$115.90	$11,590	30,021 Direct	-0.33%	Disposed	227.0% (price as of 2026-08-21)
Nov. 1, 2010	FFIV	M	15,000	$26.86	$402,900	30,121 Direct	+99.20%	Acquired	1311.1% (price as of 2026-08-21)
April 23, 2010	FFIV	S	10,215	$71.38	$729,147	15,121 Direct	-40.32%	Disposed	431.0% (price as of 2026-08-21)
March 11, 2010	FFIV	A	3,138	—	—	3,138 Direct	—	Acquired	(price as of 2026-08-21)
March 10, 2010	FFIV	M	9,709	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
March 10, 2010	FFIV	M	9,709	—	—	25,336 Direct	+62.13%	Acquired	(price as of 2026-08-21)
March 12, 2009	FFIV	A	9,709	—	—	9,709 Direct	—	Acquired	(price as of 2026-08-21)
March 11, 2009	FFIV	M	10,215	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
March 11, 2009	FFIV	M	10,215	—	—	25,627 Direct	+66.28%	Acquired	(price as of 2026-08-21)
June 1, 2007	FFIV	S	2,500	$81.28	$203,200	5,000 Direct	-33.33%	Disposed	832.6% (price as of 2026-08-21)
June 1, 2007	FFIV	S	2,500	$81.24	$203,100	7,500 Direct	-25.00%	Disposed	833.1% (price as of 2026-08-21)
March 22, 2007	FFIV	M	2,706	—	—	2,706 Direct	—	Acquired	(price as of 2026-08-21)
March 21, 2007	FFIV	M	5,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
March 21, 2007	FFIV	M	5,000	—	—	10,000 Direct	+100.00%	Acquired	(price as of 2026-08-21)
March 2, 2006	FFIV	A	5,000	—	—	5,000 Direct	—	Acquired	(price as of 2026-08-21)
March 2, 2006	FFIV	M	2,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-21)
March 2, 2006	FFIV	M	2,500	—	—	5,000 Direct	+100.00%	Acquired	(price as of 2026-08-21)
Jan. 24, 2006	FFIV	M	5,000	$18.00	$90,000	0 Direct	-100.00%	Disposed	4111.4% (price as of 2026-08-21)
Jan. 24, 2006	FFIV	M	15,000	$28.10	$421,500	0 Direct	-100.00%	Disposed	2597.7% (price as of 2026-08-21)
Jan. 24, 2006	FFIV	M	7,500	$9.50	$71,250	0 Direct	-100.00%	Disposed	7879.5% (price as of 2026-08-21)
Jan. 24, 2006	FFIV	S	25,000	$60.18	$1,504,500	2,500 Direct	-90.91%	Disposed	1159.6% (price as of 2026-08-21)
Jan. 24, 2006	FFIV	M	5,000	$18.00	$90,000	27,500 Direct	+22.22%	Acquired	4111.4% (price as of 2026-08-21)
Jan. 24, 2006	FFIV	M	15,000	$28.10	$421,500	22,500 Direct	+200.00%	Acquired	2597.7% (price as of 2026-08-21)
Jan. 24, 2006	FFIV	M	7,500	$9.50	$71,250	7,500 Direct	—	Acquired	7879.5% (price as of 2026-08-21)
Aug. 1, 2005	FFIV	A	2,500	—	—	2,500 Direct	—	Acquired	(price as of 2026-08-21)
Feb. 24, 2005	FFIV	A	7,500	$53.73	$402,975	7,500 Direct	—	Acquired	1310.9% (price as of 2026-08-21)
Jan. 24, 2005	FFIV	M	15,000	$12.79	$191,850	0 Direct	-100.00%	Disposed	5826.9% (price as of 2026-08-21)
Jan. 24, 2005	FFIV	S	15,000	$48.27	$724,050	0 Direct	-100.00%	Disposed	1470.4% (price as of 2026-08-21)
Jan. 24, 2005	FFIV	M	15,000	$12.79	$191,850	15,000 Direct	—	Acquired	5826.9% (price as of 2026-08-21)
April 29, 2004	FFIV	A	15,000	$28.10	$421,500	15,000 Direct	—	Acquired	2597.7% (price as of 2026-08-21)
Feb. 12, 2004	FFIV	M	15,000	$11.12	$166,800	0 Direct	-100.00%	Disposed	6717.0% (price as of 2026-08-21)
Feb. 12, 2004	FFIV	S	15,000	$35.59	$533,850	0 Direct	-100.00%	Disposed	2030.0% (price as of 2026-08-21)
Feb. 12, 2004	FFIV	M	15,000	$11.12	$166,800	15,000 Direct	—	Acquired	6717.0% (price as of 2026-08-21)

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
March 15, 2012	FFIV	Restricted Stock Units [F2]	Common Stock (1,512)	$0.00	—	1,512	Acquired
March 14, 2012	FFIV	Restricted Stock Units [F2]	Common Stock (1,836)	$0.00	—	1,836	Disposed
March 14, 2012	FFIV	Restricted Stock Units [F2]	Common Stock (1,836)	$0.00	—	1,836	Disposed
March 14, 2011	FFIV	Restricted Stock Units [F2]	Common Stock (1,836)	$0.00	—	1,836	Acquired
March 11, 2011	FFIV	Restricted Stock Units [F2]	Common Stock (3,138)	$0.00	—	3,138	Disposed
Nov. 1, 2010	FFIV	Non-Qualified Stock Option (right to buy)	Common Stock (15,000)	$26.86	Feb. 24, 2015	15,000	Disposed
March 11, 2010	FFIV	Restricted Stock Units [F2]	Common Stock (3,138)	$0.00	March 11, 2020	3,138	Acquired
March 10, 2010	FFIV	Restricted Stock Units	Common Stock (9,709)	$0.00	March 12, 2019	9,709	Disposed
March 12, 2009	FFIV	Restricted Stock Units [F2]	Common Stock (9,709)	$0.00	March 12, 2019	9,709	Acquired
March 11, 2009	FFIV	Restricted Stock Units	Common Stock (10,215)	$0.00	March 11, 2018	10,215	Disposed
March 22, 2007	FFIV	Restricted Stock Units [F2]	Common Stock (2,706)	$0.00	March 22, 2017	2,706	Acquired
March 21, 2007	FFIV	Restricted Stock Units	Common Stock (5,000)	$0.00	March 2, 2016	5,000	Disposed
March 2, 2006	FFIV	Restricted Stock Units [F2]	Common Stock (5,000)	$0.00	March 2, 2016	5,000	Acquired
March 2, 2006	FFIV	Restricted Stock Units	Common Stock (2,500)	$0.00	Aug. 1, 2015	2,500	Disposed
Jan. 24, 2006	FFIV	Non-Qualified Stock Option (right to buy)	Common Stock (5,000)	$18.00	June 24, 2009	5,000	Disposed
Jan. 24, 2006	FFIV	Non-Qualified Stock Option (right to buy)	Common Stock (15,000)	$28.10	April 29, 2014	15,000	Disposed
Jan. 24, 2006	FFIV	Non-Qualified Stock Option (right to buy)	Common Stock (7,500)	$9.50	Jan. 1, 2011	7,500	Disposed
Aug. 1, 2005	FFIV	Restricted Stock Units [F1]	Common Stock (2,500)	$0.00	Aug. 1, 2015	2,500	Acquired
Feb. 24, 2005	FFIV	Non-Qualified Stock Option (right to buy) [F1]	Common Stock (7,500)	$53.73	Feb. 24, 2015	7,500	Acquired
Jan. 24, 2005	FFIV	Non-Qualified Stock Option (right to buy)	Common Stock (15,000)	$12.79	Feb. 13, 2013	15,000	Disposed
April 29, 2004	FFIV	Non-Qualified Stock Option (right to buy) [F1]	Common Stock (15,000)	$28.10	April 29, 2014	15,000	Acquired
Feb. 12, 2004	FFIV	Non-Qualified Stock Option (right to buy)	Common Stock (15,000)	$11.12	May 6, 2012	15,000	Disposed

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