Form SC 13G/A GSE SYSTEMS INC Filed by: NEEDHAM INVESTMENT MANAGEMENT LLC Feb 14, 2024 10:41AM
Form SC 13G/A GSE SYSTEMS INC Filed by: NEEDHAM INVESTMENT MANAGEMENT LLC Feb 14, 2023 06:16AM
Form SC 13G/A GSE SYSTEMS INC Filed by: NEEDHAM INVESTMENT MANAGEMENT LLC Feb 14, 2022 10:08AM
Form SC 13G/A GSE SYSTEMS INC Filed by: NEEDHAM INVESTMENT MANAGEMENT LLC Feb 16, 2021 06:24AM
Form SC 13G/A GSE SYSTEMS INC Filed by: NEEDHAM INVESTMENT MANAGEMENT LLC Feb 14, 2020 09:10AM


Feb 14, 2018 06:09AM Form SC 13G/A GSE SYSTEMS INC Filed by: NEEDHAM INVESTMENT MANAGEMENT LLC
Feb 14, 2017 06:05AM Form SC 13G GSE SYSTEMS INC Filed by: NEEDHAM INVESTMENT MANAGEMENT LLC
Jan 5, 2017 09:00AM GSE Systems to Present at the 19th Annual Needham Growth Conference