Christopher Zimmerman

Insider

First SEC filing: Dec. 31, 2015 · Latest: Dec. 31, 2015

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

RBA selling Dec. 14, 2020

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 61 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

61 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 6, 2023	RBA	A	522	—	—	26,499 Direct	+2.01%	Acquired	(price as of 2026-08-19)
March 3, 2023	RBA	A	125	—	—	3,001 Direct	+4.35%	Acquired	(price as of 2026-08-19)
Dec. 14, 2022	RBA	A	140	—	—	2,876 Direct	+5.12%	Acquired	(price as of 2026-08-19)
Nov. 14, 2022	RBA	A	604	—	—	25,977 Direct	+2.38%	Acquired	(price as of 2026-08-19)
Sept. 14, 2022	RBA	A	109	—	—	2,736 Direct	+4.15%	Acquired	(price as of 2026-08-19)
Aug. 15, 2022	RBA	A	464	—	—	25,373 Direct	+1.86%	Acquired	(price as of 2026-08-19)
June 17, 2022	RBA	A	114	—	—	2,627 Direct	+4.54%	Acquired	(price as of 2026-08-19)
May 16, 2022	RBA	A	576	—	—	24,909 Direct	+2.37%	Acquired	(price as of 2026-08-19)
March 7, 2022	RBA	A	576	—	—	24,333 Direct	+2.42%	Acquired	(price as of 2026-08-19)
March 4, 2022	RBA	A	116	—	—	2,513 Direct	+4.84%	Acquired	(price as of 2026-08-19)
Dec. 15, 2021	RBA	A	95	—	—	2,397 Direct	+4.13%	Acquired	(price as of 2026-08-19)
Nov. 15, 2021	RBA	A	465	—	—	23,757 Direct	+2.00%	Acquired	(price as of 2026-08-19)
Sept. 15, 2021	RBA	A	102	—	—	2,302 Direct	+4.64%	Acquired	(price as of 2026-08-19)
Aug. 16, 2021	RBA	A	543	—	—	23,292 Direct	+2.39%	Acquired	(price as of 2026-08-19)
June 16, 2021	RBA	A	92	—	—	2,200 Direct	+4.36%	Acquired	(price as of 2026-08-19)
May 17, 2021	RBA	A	507	—	—	22,749 Direct	+2.28%	Acquired	(price as of 2026-08-19)
March 8, 2021	RBA	A	455	—	—	22,242 Direct	+2.09%	Acquired	(price as of 2026-08-19)
March 5, 2021	RBA	A	95	—	—	2,108 Direct	+4.72%	Acquired	(price as of 2026-08-19)
Dec. 16, 2020	RBA	A	75	—	—	2,013 Direct	+3.87%	Acquired	(price as of 2026-08-19)
Dec. 14, 2020	RBA	G	72	$70.44	$5,072	0 Direct	-100.00%	Disposed	24.7% (price as of 2026-08-19)
Dec. 14, 2020	RBA	G	108	$70.44	$7,608	72 Direct	-60.00%	Disposed	24.7% (price as of 2026-08-19)
Dec. 14, 2020	RBA	S	395	$70.44	$27,824	180 Direct	-68.70%	Disposed	24.7% (price as of 2026-08-19)
Nov. 25, 2020	RBA	G	155	$63.55	$9,850	575 Direct	-21.23%	Disposed	38.2% (price as of 2026-08-19)
Nov. 16, 2020	RBA	A	375	—	—	21,787 Direct	+1.75%	Acquired	(price as of 2026-08-19)
Nov. 10, 2020	RBA	S	6,126	$68.18	$417,671	730 Direct	-89.35%	Disposed	28.9% (price as of 2026-08-19)
Sept. 16, 2020	RBA	A	88	—	—	1,938 Direct	+4.76%	Acquired	(price as of 2026-08-19)
Aug. 14, 2020	RBA	A	488	—	—	21,412 Direct	+2.33%	Acquired	(price as of 2026-08-19)
June 17, 2020	RBA	A	107	—	—	1,850 Direct	+6.14%	Acquired	(price as of 2026-08-19)
May 15, 2020	RBA	A	589	—	—	20,924 Direct	+2.90%	Acquired	(price as of 2026-08-19)
March 6, 2020	RBA	A	103	—	—	1,743 Direct	+6.28%	Acquired	(price as of 2026-08-19)
March 5, 2020	RBA	A	599	—	—	20,335 Direct	+3.04%	Acquired	(price as of 2026-08-19)
Dec. 18, 2019	RBA	A	98	—	—	1,640 Direct	+6.36%	Acquired	(price as of 2026-08-19)
Nov. 14, 2019	RBA	A	609	—	—	19,736 Direct	+3.18%	Acquired	(price as of 2026-08-19)
Sept. 18, 2019	RBA	A	106	—	—	1,542 Direct	+7.38%	Acquired	(price as of 2026-08-19)
Aug. 14, 2019	RBA	A	687	—	—	19,127 Direct	+3.73%	Acquired	(price as of 2026-08-19)
June 19, 2019	RBA	A	104	—	—	1,436 Direct	+7.81%	Acquired	(price as of 2026-08-19)
May 15, 2019	RBA	A	735	—	—	18,440 Direct	+4.15%	Acquired	(price as of 2026-08-19)
March 8, 2019	RBA	A	91	—	—	1,332 Direct	+7.33%	Acquired	(price as of 2026-08-19)
March 6, 2019	RBA	A	683	—	—	17,705 Direct	+4.01%	Acquired	(price as of 2026-08-19)
Dec. 19, 2018	RBA	A	97	—	—	1,241 Direct	+8.48%	Acquired	(price as of 2026-08-19)
Nov. 14, 2018	RBA	A	745	—	—	17,022 Direct	+4.58%	Acquired	(price as of 2026-08-19)
Sept. 19, 2018	RBA	A	82	—	—	1,144 Direct	+7.72%	Acquired	(price as of 2026-08-19)
Aug. 14, 2018	RBA	A	732	—	—	16,277 Direct	+4.71%	Acquired	(price as of 2026-08-19)
June 20, 2018	RBA	A	81	—	—	1,062 Direct	+8.26%	Acquired	(price as of 2026-08-19)
May 15, 2018	RBA	A	753	—	—	15,545 Direct	+5.09%	Acquired	(price as of 2026-08-19)
March 9, 2018	RBA	A	80	—	—	981 Direct	+8.88%	Acquired	(price as of 2026-08-19)
March 6, 2018	RBA	A	538	—	—	14,792 Direct	+3.77%	Acquired	(price as of 2026-08-19)
Dec. 20, 2017	RBA	A	93	—	—	901 Direct	+11.51%	Acquired	(price as of 2026-08-19)
Nov. 14, 2017	RBA	A	631	—	—	14,254 Direct	+4.63%	Acquired	(price as of 2026-08-19)
Sept. 15, 2017	RBA	A	83	—	—	808 Direct	+11.45%	Acquired	(price as of 2026-08-19)
Aug. 14, 2017	RBA	A	612	—	—	13,623 Direct	+4.70%	Acquired	(price as of 2026-08-19)
June 13, 2017	RBA	A	75	—	—	725 Direct	+11.54%	Acquired	(price as of 2026-08-19)
May 15, 2017	RBA	A	545	—	—	13,011 Direct	+4.37%	Acquired	(price as of 2026-08-19)
March 6, 2017	RBA	A	526	—	—	12,466 Direct	+4.41%	Acquired	(price as of 2026-08-19)
March 3, 2017	RBA	A	65	—	—	650 Direct	+11.11%	Acquired	(price as of 2026-08-19)
Dec. 19, 2016	RBA	A	55	—	—	585 Direct	+10.38%	Acquired	(price as of 2026-08-19)
Nov. 14, 2016	RBA	A	490	—	—	11,940 Direct	+4.28%	Acquired	(price as of 2026-08-19)
Sept. 23, 2016	RBA	A	59	—	—	530 Direct	+12.53%	Acquired	(price as of 2026-08-19)
Aug. 15, 2016	RBA	A	548	—	—	11,450 Direct	+5.03%	Acquired	(price as of 2026-08-19)
June 14, 2016	RBA	A	55	—	—	471 Direct	+13.22%	Acquired	(price as of 2026-08-19)
May 16, 2016	RBA	A	581	—	—	10,902 Direct	+5.63%	Acquired	(price as of 2026-08-19)
March 7, 2016	RBA	A	737	—	—	10,321 Direct	+7.69%	Acquired	(price as of 2026-08-19)
March 4, 2016	RBA	A	68	—	—	416 Direct	+19.54%	Acquired	(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 6, 2023	RBA	Deferred Share Units	Common Shares (522)	—	—	522	Acquired
March 3, 2023	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (125)	—	—	125	Acquired
Dec. 14, 2022	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (140)	—	—	140	Acquired
Nov. 14, 2022	RBA	Deferred Share Units	Common Shares (604)	—	—	604	Acquired
Sept. 14, 2022	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (109)	—	—	109	Acquired
Aug. 15, 2022	RBA	Deferred Share Units	Common Shares (464)	—	—	464	Acquired
June 17, 2022	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (114)	—	—	114	Acquired
May 16, 2022	RBA	Deferred Share Units	Common Shares (576)	—	—	576	Acquired
March 7, 2022	RBA	Deferred Share Units	Common Shares (576)	—	—	576	Acquired
March 4, 2022	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (116)	—	—	116	Acquired
Dec. 15, 2021	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (95)	—	—	95	Acquired
Nov. 15, 2021	RBA	Deferred Share Units	Common Shares (465)	—	—	465	Acquired
Sept. 15, 2021	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (102)	—	—	102	Acquired
Aug. 16, 2021	RBA	Deferred Share Units	Common Shares (543)	—	—	543	Acquired
June 16, 2021	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (92)	—	—	92	Acquired
May 17, 2021	RBA	Deferred Share Units	Common Shares (507)	—	—	507	Acquired
March 8, 2021	RBA	Deferred Share Units	Common Shares (455)	—	—	455	Acquired
March 5, 2021	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (95)	—	—	95	Acquired
Dec. 16, 2020	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (75)	—	—	75	Acquired
Nov. 16, 2020	RBA	Deferred Share Units	Common Shares (375)	—	—	375	Acquired
Sept. 16, 2020	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (88)	—	—	88	Acquired
Aug. 14, 2020	RBA	Deferred Share Units	Common Shares (488)	—	—	488	Acquired
June 17, 2020	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (107)	—	—	107	Acquired
May 15, 2020	RBA	Deferred Share Units	Common Shares (589)	—	—	589	Acquired
March 6, 2020	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (103)	—	—	103	Acquired
March 5, 2020	RBA	Deferred Share Units	Common Shares (599)	—	—	599	Acquired
Dec. 18, 2019	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (98)	—	—	98	Acquired
Nov. 14, 2019	RBA	Deferred Share Units	Common Shares (609)	—	—	609	Acquired
Sept. 18, 2019	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (106)	—	—	106	Acquired
Aug. 14, 2019	RBA	Deferred Share Units	Common Shares (687)	—	—	687	Acquired
June 19, 2019	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (104)	—	—	104	Acquired
May 15, 2019	RBA	Deferred Share Units	Common Shares (735)	—	—	735	Acquired
March 8, 2019	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (91)	—	—	91	Acquired
March 6, 2019	RBA	Deferred Share Units	Common Shares (683)	—	—	683	Acquired
Dec. 19, 2018	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (97)	—	—	97	Acquired
Nov. 14, 2018	RBA	Deferred Share Units	Common Shares (745)	—	—	745	Acquired
Sept. 19, 2018	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (82)	—	—	82	Acquired
Aug. 14, 2018	RBA	Deferred Share Units	Common Shares (732)	—	—	732	Acquired
June 20, 2018	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (81)	—	—	81	Acquired
May 15, 2018	RBA	Deferred Share Units	Common Shares (753)	—	—	753	Acquired
March 9, 2018	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (80)	—	—	80	Acquired
March 6, 2018	RBA	Deferred Share Units	Common Shares (538)	—	—	538	Acquired
Dec. 20, 2017	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (93)	—	—	93	Acquired
Nov. 14, 2017	RBA	Deferred Share Units	Common Shares (631)	—	—	631	Acquired
Sept. 15, 2017	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (83)	—	—	83	Acquired
Aug. 14, 2017	RBA	Deferred Share Units	Common Shares (612)	—	—	612	Acquired
June 13, 2017	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (75)	—	—	75	Acquired
May 15, 2017	RBA	Deferred Share Units	Common Shares (545)	—	—	545	Acquired
March 6, 2017	RBA	Deferred Share Units	Common Shares (526)	—	—	526	Acquired
March 3, 2017	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (65)	—	—	65	Acquired
Dec. 19, 2016	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (55)	—	—	55	Acquired
Nov. 14, 2016	RBA	Deferred Share Units	Common Shares (490)	—	—	490	Acquired
Sept. 23, 2016	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (59)	—	—	59	Acquired
Aug. 15, 2016	RBA	Deferred Share Units	Common Shares (548)	—	—	548	Acquired
June 14, 2016	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (55)	—	—	55	Acquired
May 16, 2016	RBA	Deferred Share Units	Common Shares (581)	—	—	581	Acquired
March 7, 2016	RBA	Deferred Share Units (?DSUs?)	Common Shares (737)	—	—	737	Acquired
March 4, 2016	RBA	Dividend Equivalent Rights (DSUs)	Common Shares (68)	—	—	68	Acquired

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

Initial ownership (Form 3) 3 holdings

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

Date	Ticker	Security	Shares	Ownership
Dec. 31, 2015	RBA	Common Stock	6,856	Indirect
Dec. 31, 2015	RBA	Deferred Share Units ("DSUs")→ Common Stock (9,584)	9,584	Direct
Dec. 31, 2015	RBA	Dividend Equivalent Rights (DSUs)→ Common Stock (348)	348	Direct