23 insiders reported 368 Form 4 transactions for FOSTER L B CO (FSTR) over the past 18 months (most recent 2026-06-03). Recent activity: REILLY SEAN M (SVP and CFO) Buy 895 shares, THALMAN WILLIAM M (EVP & COO) Buy 1,128 shares, Curran Timothy Joseph (Controller and PAO) Buy 295 shares, OWEN DIANE B (Director) Buy 2,363 shares, Betler Raymond T (Director) Buy 2,363 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-03 | REILLY SEAN M | SVP and CFO | Buy | 895 | $0 |
| 2026-06-03 | THALMAN WILLIAM M | EVP & COO | Buy | 1,128 | $0 |
| 2026-06-03 | Curran Timothy Joseph | Controller and PAO | Buy | 295 | $0 |
| 2026-05-22 | OWEN DIANE B | Director | Buy | 2,363 | $0 |
| 2026-05-22 | Betler Raymond T | Director | Buy | 2,363 | $0 |
| 2026-05-22 | Kunz John E | Director | Buy | 2,363 | $0 |
| 2026-05-22 | Meyer David J | Director | Buy | 2,363 | $0 |
| 2026-05-22 | Thompson Bruce Ernest | Director | Buy | 2,363 | $0 |
| 2026-04-02 | 22NW GP, Inc. | Insider | Sell | 1,500 | $42,030 |
| 2026-04-02 | 22NW, LP | Insider | Sell | 1,500 | $42,030 |
| 2026-04-02 | English Aron R. | Insider | Sell | 1,500 | $42,030 |
| 2026-04-02 | 22NW Fund GP, LLC | Insider | Sell | 1,500 | $42,030 |
| 2026-04-02 | 22NW Fund, LP | Insider | Sell | 1,500 | $42,030 |
| 2026-04-02 | 22NW Fund, LP | Insider | Sell | 38,431 | $1.1M |
| 2026-04-02 | 22NW, LP | Insider | Sell | 38,431 | $1.1M |
| 2026-04-02 | English Aron R. | Insider | Sell | 38,431 | $1.1M |
| 2026-04-02 | 22NW Fund GP, LLC | Insider | Sell | 38,431 | $1.1M |
| 2026-04-02 | 22NW GP, Inc. | Insider | Sell | 38,431 | $1.1M |
| 2026-03-30 | 22NW Fund, LP | Insider | Sell | 8,968 | $251,283 |
| 2026-03-30 | 22NW GP, Inc. | Insider | Sell | 8,968 | $251,283 |
| 2026-03-30 | 22NW Fund GP, LLC | Insider | Sell | 8,968 | $251,283 |
| 2026-03-30 | English Aron R. | Insider | Sell | 8,968 | $251,283 |
| 2026-03-30 | 22NW, LP | Insider | Sell | 8,968 | $251,283 |
| 2026-03-30 | 22NW GP, Inc. | Insider | Sell | 862 | $24,153 |
| 2026-03-30 | 22NW Fund GP, LLC | Insider | Sell | 862 | $24,153 |
Source: SEC Form 4 filings · as of 2026-06-03