Ronald Ballschmiede

Currently holds a position at Sterling Infrastructure Inc

1.7

1.7

Position	Company	Period
Chief Financial Officer, Executive Vice President, Chief Accounting Officer, Treasurer	Sterling Infrastructure Inc	Nov. 9, 2015 -
Independent Director	SemGroup Corp	Nov. 1, 2009 - Dec. 5, 2019
Chief Financial Officer, Executive Vice President	Chicago Bridge & Iron Company NV	Jan. 1, 2006 - April 1, 2015

• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings

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Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other

Notification date	Transaction date	Company	B/S Transaction type	Nb. shares Price Value	Number of shares	Price	Value
2024-09-23	2024-09-19	Sterling Infrastructure Inc (STRL)	S Sale	34,411 +20.3% 297.33 US$1,071,075	34,411 +20.3%	297.33	US$1,071,075
2024-09-18	2024-09-19	Sterling Infrastructure Inc (STRL)	PrS Proposed sale	62,184 297.10 US$2,344,860	62,184	297.10	US$2,344,860
2024-03-25	2024-03-25	Sterling Infrastructure Inc (STRL)	PrS Proposed sale	68,530 421.04 US$1,243,031	68,530	421.04	US$1,243,031
2024-03-25	2024-03-25	Sterling Infrastructure Inc (STRL)	S Sale	3,289 -1.2% 113.52 US$373,361	3,289 -1.2%	113.52	US$373,361
2024-03-20	2024-03-20	Sterling Infrastructure Inc (STRL)	S Sale	13,000 -4.6% 109.66 US$1,425,554	13,000 -4.6%	109.66	US$1,425,554
2024-03-19	2024-03-15	Sterling Infrastructure Inc (STRL)	S Sale	6,000 -2.1% 109.50 US$657,000	6,000 -2.1%	109.50	US$657,000
2024-03-13	2024-03-13	Sterling Infrastructure Inc (STRL)	PrS Proposed sale	19,000 109.00 US$2,071,000	19,000	109.00	US$2,071,000
2023-06-22	2023-06-21	Sterling Infrastructure Inc (STRL)	PlS Planned sale	100,000 -26.9% 52.07 US$5,206,900	100,000 -26.9%	52.07	US$5,206,900
2023-06-21	2023-06-21	Sterling Infrastructure Inc (STRL)	PrS Proposed sale	100,000 52.61 US$5,261,000	100,000	52.61	US$5,261,000