Greg A Robertson

Insider

First SEC filing: March 11, 2009 · Latest: March 11, 2009

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

WM selling Oct. 28, 2011

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 46 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

46 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 9, 2012	WM	A	8,741	—	—	8,741 Direct	—	Acquired	(price as of 2026-08-19)
March 9, 2012	WM	F	506	$34.94	$17,680	34,796 Direct	-1.43%	Disposed	549.3% (price as of 2026-08-19)
Feb. 16, 2012	WM	F	1,397	$34.44	$48,113	35,302 Direct	-3.81%	Disposed	558.8% (price as of 2026-08-19)
Feb. 16, 2012	WM	A	4,991	$34.44	$171,890	36,699 Direct	+15.74%	Acquired	558.8% (price as of 2026-08-19)
Oct. 28, 2011	WM	S	335	$34.01	$11,393	31,708 Direct	-1.05%	Disposed	567.1% (price as of 2026-08-19)
Oct. 27, 2011	WM	M	19,770	$27.88	$551,188	0 Direct	-100.00%	Disposed	713.8% (price as of 2026-08-19)
Oct. 27, 2011	WM	F	17,283	$33.63	$581,227	32,043 Direct	-35.04%	Disposed	574.6% (price as of 2026-08-19)
Oct. 27, 2011	WM	M	19,770	$27.88	$551,188	49,326 Direct	+66.89%	Acquired	713.8% (price as of 2026-08-19)
March 9, 2011	WM	A	27,680	—	—	27,680 Direct	—	Acquired	(price as of 2026-08-19)
March 4, 2011	WM	S	185	$37.40	$6,919	29,556 Direct	-0.62%	Disposed	506.6% (price as of 2026-08-19)
March 3, 2011	WM	F	548	$37.18	$20,375	29,741 Direct	-1.81%	Disposed	510.2% (price as of 2026-08-19)
Aug. 3, 2010	WM	S	3,300	$34.42	$113,586	30,289 Direct	-9.82%	Disposed	559.1% (price as of 2026-08-19)
Aug. 3, 2010	WM	S	2,700	$34.41	$92,907	33,589 Direct	-7.44%	Disposed	559.3% (price as of 2026-08-19)
Aug. 3, 2010	WM	S	2,100	$34.47	$72,387	36,289 Direct	-5.47%	Disposed	558.2% (price as of 2026-08-19)
Aug. 3, 2010	WM	S	2,000	$34.48	$68,960	38,389 Direct	-4.95%	Disposed	558.0% (price as of 2026-08-19)
Aug. 3, 2010	WM	S	2,000	$34.49	$68,980	40,389 Direct	-4.72%	Disposed	557.8% (price as of 2026-08-19)
Aug. 3, 2010	WM	S	1,900	$34.46	$65,474	42,389 Direct	-4.29%	Disposed	558.4% (price as of 2026-08-19)
Aug. 3, 2010	WM	S	1,000	$34.43	$34,430	44,289 Direct	-2.21%	Disposed	558.9% (price as of 2026-08-19)
Aug. 3, 2010	WM	S	858	$34.40	$29,515	45,289 Direct	-1.86%	Disposed	559.5% (price as of 2026-08-19)
Aug. 3, 2010	WM	M	17,500	$24.01	$420,175	46,147 Direct	+61.09%	Acquired	844.9% (price as of 2026-08-19)
Aug. 3, 2010	WM	M	17,500	$24.01	$420,175	0 Direct	-100.00%	Disposed	844.9% (price as of 2026-08-19)
March 9, 2010	WM	A	17,053	—	—	17,053 Direct	—	Acquired	(price as of 2026-08-19)
Feb. 17, 2010	WM	S	449	$32.89	$14,768	28,647 Direct	-1.54%	Disposed	589.8% (price as of 2026-08-19)
Feb. 16, 2010	WM	F	1,188	$32.76	$38,919	29,096 Direct	-3.92%	Disposed	592.5% (price as of 2026-08-19)
Feb. 16, 2010	WM	A	4,491	$32.76	$147,125	30,284 Direct	+17.41%	Acquired	592.5% (price as of 2026-08-19)
Jan. 28, 2010	WM	S	285	$32.36	$9,223	25,793 Direct	-1.09%	Disposed	601.1% (price as of 2026-08-19)
Jan. 27, 2010	WM	F	327	$32.44	$10,608	26,078 Direct	-1.24%	Disposed	599.4% (price as of 2026-08-19)
Jan. 26, 2010	WM	F	582	$32.60	$18,973	26,405 Direct	-2.16%	Disposed	595.9% (price as of 2026-08-19)
March 9, 2009	WM	A	1,913	—	—	26,987 Direct	+7.63%	Acquired	(price as of 2026-08-19)
Feb. 18, 2009	WM	S	391	$28.56	$11,167	25,074 Direct	-1.54%	Disposed	694.4% (price as of 2026-08-19)
Feb. 17, 2009	WM	F	1,033	$28.50	$29,440	25,465 Direct	-3.90%	Disposed	696.1% (price as of 2026-08-19)
Feb. 17, 2009	WM	A	3,903	$28.50	$111,236	26,498 Direct	+17.27%	Acquired	696.1% (price as of 2026-08-19)
Jan. 28, 2009	WM	S	206	$33.20	$6,839	22,595 Direct	-0.90%	Disposed	583.4% (price as of 2026-08-19)
Jan. 28, 2009	WM	S	206	$33.20	$6,839	21,913 Direct	-0.93%	Disposed	583.4% (price as of 2026-08-19)
Jan. 27, 2009	WM	F	682	$32.72	$22,315	22,801 Direct	-2.90%	Disposed	593.4% (price as of 2026-08-19)
Jan. 27, 2009	WM	F	682	$32.72	$22,315	22,119 Direct	-2.99%	Disposed	593.4% (price as of 2026-08-19)
May 14, 2008	WM	S	41	$37.13	$1,522	23,483 Direct	-0.17%	Disposed	511.0% (price as of 2026-08-19)
May 13, 2008	WM	F	106	$36.84	$3,905	23,524 Direct	-0.45%	Disposed	515.8% (price as of 2026-08-19)
March 5, 2008	WM	S	36	$33.48	$1,205	21,778 Direct	-0.17%	Disposed	577.6% (price as of 2026-08-19)
March 4, 2008	WM	F	93	$32.77	$3,048	21,814 Direct	-0.42%	Disposed	592.3% (price as of 2026-08-19)
March 3, 2008	WM	A	1,852	—	—	23,759 Direct	+8.45%	Acquired	(price as of 2026-08-19)
Feb. 20, 2008	WM	S	386	$33.42	$12,900	21,907 Direct	-1.73%	Disposed	578.9% (price as of 2026-08-19)
Feb. 19, 2008	WM	F	1,006	$33.83	$34,033	22,293 Direct	-4.32%	Disposed	570.6% (price as of 2026-08-19)
Feb. 19, 2008	WM	A	3,803	$33.83	$128,655	23,299 Direct	+19.51%	Acquired	570.6% (price as of 2026-08-19)
Jan. 28, 2008	WM	S	210	$31.10	$6,531	19,496 Direct	-1.07%	Disposed	629.5% (price as of 2026-08-19)
Jan. 27, 2008	WM	F	682	$30.92	$21,087	19,706 Direct	-3.35%	Disposed	633.7% (price as of 2026-08-19)
March 4, 2007	WM	F	93	$33.27	$3,094	20,459 Direct	-0.45%	Disposed	581.9% (price as of 2026-08-19)
Jan. 27, 2007	WM	F	681	$37.28	$25,388	20,552 Direct	-3.21%	Disposed	508.6% (price as of 2026-08-19)
Jan. 26, 2007	WM	A	1,780	—	—	21,233 Direct	+9.15%	Acquired	(price as of 2026-08-19)
May 13, 2006	WM	F	106	$36.01	$3,817	19,453 Direct	-0.54%	Disposed	530.0% (price as of 2026-08-19)
March 4, 2006	WM	F	93	$33.20	$3,088	19,559 Direct	-0.47%	Disposed	583.4% (price as of 2026-08-19)
Feb. 21, 2006	WM	M	20,000	$13.62	$272,400	0 Direct	-100.00%	Disposed	1565.7% (price as of 2026-08-19)
Feb. 21, 2006	WM	M	17,500	$19.61	$343,175	0 Direct	-100.00%	Disposed	1056.9% (price as of 2026-08-19)
Feb. 21, 2006	WM	M	12,500	$24.01	$300,125	17,500 Direct	-41.67%	Disposed	844.9% (price as of 2026-08-19)
Feb. 21, 2006	WM	S	10,915	$34.00	$371,110	19,652 Direct	-35.71%	Disposed	567.3% (price as of 2026-08-19)
Feb. 21, 2006	WM	S	200	$33.97	$6,794	30,567 Direct	-0.65%	Disposed	567.9% (price as of 2026-08-19)
Feb. 21, 2006	WM	S	22,280	$33.95	$756,406	30,767 Direct	-42.00%	Disposed	568.3% (price as of 2026-08-19)
Feb. 21, 2006	WM	S	1,500	$33.94	$50,910	53,047 Direct	-2.75%	Disposed	568.5% (price as of 2026-08-19)
Feb. 21, 2006	WM	S	6,800	$33.91	$230,588	54,547 Direct	-11.08%	Disposed	569.1% (price as of 2026-08-19)
Feb. 21, 2006	WM	M	12,500	$24.01	$300,125	61,347 Direct	+25.59%	Acquired	844.9% (price as of 2026-08-19)
Feb. 21, 2006	WM	M	20,000	$13.62	$272,400	48,847 Direct	+69.33%	Acquired	1565.7% (price as of 2026-08-19)
Feb. 21, 2006	WM	M	17,500	$19.61	$343,175	28,847 Direct	+154.23%	Acquired	1056.9% (price as of 2026-08-19)
Jan. 27, 2006	WM	F	340	$31.68	$10,771	11,347 Direct	-2.91%	Disposed	616.1% (price as of 2026-08-19)
Jan. 27, 2006	WM	A	4,170	—	—	11,687 Direct	+55.47%	Acquired	(price as of 2026-08-19)
May 13, 2005	WM	F	105	$28.70	$3,014	7,513 Direct	-1.38%	Disposed	690.5% (price as of 2026-08-19)
March 4, 2005	WM	F	114	$29.50	$3,363	7,614 Direct	-1.48%	Disposed	669.1% (price as of 2026-08-19)
Jan. 27, 2005	WM	A	4,170	—	—	7,728 Direct	+117.20%	Acquired	(price as of 2026-08-19)
Jan. 27, 2005	WM	A	1,470	—	—	5,028 Direct	+41.32%	Acquired	(price as of 2026-08-19)
May 13, 2004	WM	A	1,600	—	—	3,547 Direct	+82.18%	Acquired	(price as of 2026-08-19)
May 13, 2004	WM	A	17,750	$27.60	$489,900	17,750 Direct	—	Acquired	722.0% (price as of 2026-08-19)

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 9, 2012	WM	Stock Option (Right to Buy) [F1]	Common Stock (8,741)	$34.94	March 9, 2022	8,741	Acquired
Oct. 27, 2011	WM	Stock Option (Right to Buy)	Common Stock (19,770)	$27.88	March 7, 2012	19,770	Disposed
March 9, 2011	WM	Stock Option (Right to Buy) [F1]	Common Stock (27,680)	$37.18	March 9, 2021	27,680	Acquired
Aug. 3, 2010	WM	Stock Option (Right to Buy)	Common Stock (17,500)	$24.01	March 1, 2011	17,500	Disposed
March 9, 2010	WM	Stock Option (Right to Buy) [F1]	Common Stock (17,053)	$33.49	March 9, 2020	17,053	Acquired
Feb. 21, 2006	WM	Stock option (right to buy) [F2]	Common Stock (20,000)	$13.62	March 20, 2010	20,000	Disposed
Feb. 21, 2006	WM	Stock Option (right to buy) [F1]	Common Stock (17,500)	$19.61	March 6, 2013	17,500	Disposed
Feb. 21, 2006	WM	Stock Option (Right to Buy) [F1]	Common Stock (12,500)	$24.01	March 1, 2011	12,500	Disposed
May 13, 2004	WM	Stock Option (right to buy) [F2]	Common Stock (17,750)	$27.60	May 13, 2014	17,750	Acquired

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

Initial ownership (Form 3) 6 holdings

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

Date	Ticker	Security	Shares	Ownership
March 22, 2004	WM	Common Stock [F1]	1,947	Direct
March 22, 2004	WM	Stock Option (Right to Buy) [F2]→ Common Stock (30,000)	30,000	Direct
March 22, 2004	WM	Stock Option (right to buy) [F2]→ Common Stock (19,770)	19,770	Direct
March 22, 2004	WM	Stock Option (right to buy) [F2]→ Common Stock (17,500)	17,500	Direct
March 22, 2004	WM	Stock Option (right to buy) [F2]→ Common Stock (12,250)	12,250	Direct
March 22, 2004	WM	Stock option (right to buy) [F3]→ Common Stock (20,000)	20,000	Direct