John C. Vollmer

Insider

First SEC filing: Nov. 21, 2017 · Latest: Nov. 21, 2017

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

ACM selling Dec. 27, 2019

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 23 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

23 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Jan. 27, 2020	ACM	M	5,657	—	—	5,657 Direct	-50.00%	Disposed	(price as of 2026-08-20)
Jan. 27, 2020	ACM	M	7,824	—	—	7,824 Direct	-50.00%	Disposed	(price as of 2026-08-20)
Jan. 27, 2020	ACM	F	6,600	$48.82	$322,212	37,975 Direct	-14.81%	Disposed	32.9% (price as of 2026-08-20)
Jan. 27, 2020	ACM	M	13,481	$48.82	$658,142	44,575 Direct	+43.36%	Acquired	32.9% (price as of 2026-08-20)
Jan. 27, 2020	ACM	A	19,679	—	—	31,094 Direct	+172.40%	Acquired	(price as of 2026-08-20)
Dec. 27, 2019	ACM	M	30,240	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 27, 2019	ACM	S 10b5-1	30,240	$43.28	$1,308,787	11,415 Direct	-72.60%	Disposed	49.9% (price as of 2026-08-20)
Dec. 15, 2019	ACM	M	6,879	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Dec. 15, 2019	ACM	A	3,556	—	—	41,655 Direct	+9.33%	Acquired	(price as of 2026-08-20)
Dec. 15, 2019	ACM	F	2,882	$38.16	$109,977	37,269 Direct	-7.18%	Disposed	70.0% (price as of 2026-08-20)
Dec. 15, 2019	ACM	M	6,879	$38.16	$262,503	40,151 Direct	+20.68%	Acquired	70.0% (price as of 2026-08-20)
Dec. 15, 2018	ACM	A	14,546	—	—	14,546 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 15, 2018	ACM	M	6,996	—	—	6,996 Direct	-50.00%	Disposed	(price as of 2026-08-20)
Dec. 15, 2018	ACM	A	4,521	—	—	33,272 Direct	+15.72%	Acquired	(price as of 2026-08-20)
Dec. 15, 2018	ACM	F	3,380	$27.91	$94,336	28,329 Direct	-10.66%	Disposed	132.4% (price as of 2026-08-20)
Dec. 15, 2018	ACM	M	6,996	$27.91	$195,258	31,709 Direct	+28.31%	Acquired	132.4% (price as of 2026-08-20)
May 1, 2018	ACM	M	2,124	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 1, 2018	ACM	F	1,020	$34.44	$35,129	24,713 Direct	-3.96%	Disposed	88.4% (price as of 2026-08-20)
May 1, 2018	ACM	M	2,124	$34.44	$73,151	25,460 Direct	+9.10%	Acquired	88.4% (price as of 2026-08-20)
Dec. 15, 2017	ACM	A	4,753	—	—	4,753 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 15, 2017	ACM	M	7,714	—	—	7,714 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 15, 2017	ACM	A	4,753	$36.93	$175,528	23,336 Direct	+25.58%	Acquired	75.7% (price as of 2026-08-20)
Dec. 15, 2017	ACM	F	3,911	$36.93	$144,433	18,583 Direct	-17.39%	Disposed	75.7% (price as of 2026-08-20)
Dec. 15, 2017	ACM	M	7,714	$36.93	$284,878	22,494 Direct	+52.19%	Acquired	75.7% (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
Jan. 27, 2020	ACM	Restricted Stock Unit	Common Stock (5,657)	—	—	5,657	Disposed
Jan. 27, 2020	ACM	Restricted Stock Unit	Common Stock (7,824)	—	—	7,824	Disposed
Dec. 27, 2019	ACM	Restricted Stock Unit	Common Stock (30,240)	—	—	30,240	Disposed
Dec. 15, 2019	ACM	Restricted Stock Unit	Common Stock (6,879)	—	—	6,879	Disposed
Dec. 15, 2018	ACM	Restricted Stock Unit	Common Stock (14,546)	—	—	14,546	Acquired
Dec. 15, 2018	ACM	Restricted Stock Unit	Common Stock (6,996)	—	—	6,996	Disposed
May 1, 2018	ACM	Restricted Stock Units	Common Stock (2,124)	—	—	2,124	Disposed
Dec. 15, 2017	ACM	Restricted Stock Unit	Common Stock (4,753)	—	—	4,753	Acquired
Dec. 15, 2017	ACM	Restricted Stock Unit	Common Stock (7,714)	—	—	7,714	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
Nov. 21, 2017	ACM	Common Stock	14,780	Direct
Nov. 21, 2017	ACM	Common Stock	106	Indirect
Nov. 21, 2017	ACM	Restricted Stock Units→ Common Stock (7,714)	7,714	Direct
Nov. 21, 2017	ACM	Restricted Stock Unit→ Common Stock (2,124)	2,124	Direct
Nov. 21, 2017	ACM	Restricted Stock Units→ Common Stock (6,996)	6,996	Direct
Nov. 21, 2017	ACM	Restricted Stock Units→ Common Stock (6,879)	6,879	Direct

Compensation (DEF 14A)

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

ACM

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2018	$554,813	$0	$1,027,973	—	$600,000	$0	$22,928	$2,205,714

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