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The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a shareholder of the issuer, full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":29723,"source":{"system":"sec-edgar","filing":"0001567619-22-021550","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/352825/000156761922021550/doc1.xml","form_type":"4"}},{"id":2160728,"issuer":{"id":5689,"kind":"organization","name":"FOSTER L B CO"},"owners":[{"id":42082,"kind":"person","name":"THALMAN WILLIAM M","position":1,"cik":"0001104808","reported_name":"THALMAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior VP & CFO"}}],"security":"Common Stock","published_at":"2022-09-13T19:00:11.000Z","date":"2022-09-12","kind":"purchase","acquired":true,"shares":3000,"price":12.355,"value":37065.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This transaction was executed in multiple trades ranging from $12.29-$12.39.  The price reported above reflects the weighted average purchase price.  The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a shareholder of the issuer, full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":27723,"source":{"system":"sec-edgar","filing":"0001567619-22-017322","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/352825/000156761922017322/doc1.xml","form_type":"4"}},{"id":2357940,"issuer":{"id":5689,"kind":"organization","name":"FOSTER L B CO"},"owners":[{"id":42082,"kind":"person","name":"THALMAN WILLIAM M","position":1,"cik":"0001104808","reported_name":"THALMAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior VP & CFO"}}],"security":"Common Stock","published_at":"2022-03-03T13:54:10.000Z","date":"2022-03-01","kind":"tax_withholding","acquired":false,"shares":2150,"price":14.73,"value":31669.5,"ownership":{"direct":true},"balance_after":24723,"source":{"system":"sec-edgar","filing":"0001567619-22-006147","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/352825/000156761922006147/doc1.xml","form_type":"4"}},{"id":2367413,"issuer":{"id":5689,"kind":"organization","name":"FOSTER L B CO"},"owners":[{"id":42082,"kind":"person","name":"THALMAN WILLIAM M","position":1,"cik":"0001104808","reported_name":"THALMAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior VP & CFO"}}],"security":"Common Stock","published_at":"2022-03-01T20:12:53.000Z","date":"2022-02-26","kind":"tax_withholding","acquired":false,"shares":808,"price":15.21,"value":12289.68,"ownership":{"direct":true},"balance_after":26873,"source":{"system":"sec-edgar","filing":"0001567619-22-005860","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/352825/000156761922005860/doc1.xml","form_type":"4"}},{"id":2383867,"issuer":{"id":5689,"kind":"organization","name":"FOSTER L B CO"},"owners":[{"id":42082,"kind":"person","name":"THALMAN WILLIAM M","position":1,"cik":"0001104808","reported_name":"THALMAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior VP & CFO"}}],"security":"Common Stock","published_at":"2022-02-22T20:26:02.000Z","date":"2022-02-17","kind":"grant","acquired":true,"shares":6906,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Award of time vested restricted stock, which shall vest in 33-1/3 increments on each of the first, second and third anniversaries of the date of the grant."}],"balance_after":27681,"source":{"system":"sec-edgar","filing":"0001567619-22-005233","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/352825/000156761922005233/doc1.xml","form_type":"4"}},{"id":2823636,"issuer":{"id":5689,"kind":"organization","name":"FOSTER L B CO"},"owners":[{"id":42082,"kind":"person","name":"THALMAN WILLIAM M","position":1,"cik":"0001104808","reported_name":"THALMAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior VP & CFO"}}],"security":"Performance Stock Units","published_at":"2021-03-02T21:17:32.000Z","date":"2021-03-01","kind":"grant","acquired":true,"shares":3333,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Performance-based stock unit award which expires on 02/28/26, 5 years after the grant date. Fifty percent of the award, or 1,666 shares, may be earned when the consecutive 30 day average closing stock price per share of the Company's common stock on the Nasdaq Stock Market is $25.00 per share or more and is generally  subject to continued employment with the Company until the third anniversary of the grant date. The remaining 50% of the award, or 1,667 shares, may be earned when the consecutive 30 day average closing stock price per share of the Company's common stock on the Nasdaq Stock Market is $30.00 per share or more and is generally subject to continued employment with the Company until the third anniversary of the grant date. If either or both of these measures are achieved after the third anniversary of the grant date, the shares will be issued upon attainment of such stock price goals and if the grantee is employed by the Company on the date of attainment of such goals."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Performance-based stock unit award which expires on 02/28/26, 5 years after the grant date. Fifty percent of the award, or 1,666 shares, may be earned when the consecutive 30 day average closing stock price per share of the Company's common stock on the Nasdaq Stock Market is $25.00 per share or more and is generally  subject to continued employment with the Company until the third anniversary of the grant date. The remaining 50% of the award, or 1,667 shares, may be earned when the consecutive 30 day average closing stock price per share of the Company's common stock on the Nasdaq Stock Market is $30.00 per share or more and is generally subject to continued employment with the Company until the third anniversary of the grant date. If either or both of these measures are achieved after the third anniversary of the grant date, the shares will be issued upon attainment of such stock price goals and if the grantee is employed by the Company on the date of attainment of such goals."}],"balance_after":3333,"derivative":{"expiration_date":"2026-02-28","underlying":"Common Stock","underlying_shares":3333},"source":{"system":"sec-edgar","filing":"0001567619-21-005356","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/352825/000156761921005356/doc1.xml","form_type":"4"}},{"id":2823635,"issuer":{"id":5689,"kind":"organization","name":"FOSTER L B CO"},"owners":[{"id":42082,"kind":"person","name":"THALMAN WILLIAM M","position":1,"cik":"0001104808","reported_name":"THALMAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior VP & CFO"}}],"security":"Common Stock","published_at":"2021-03-02T21:17:32.000Z","date":"2021-03-01","kind":"grant","acquired":true,"shares":5775,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Award of time vested restricted stock, which shall vest in 33-1/3 increments on each of the first, second and third anniversaries of the date of the grant."}],"balance_after":20775,"source":{"system":"sec-edgar","filing":"0001567619-21-005356","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/352825/000156761921005356/doc1.xml","form_type":"4"}},{"id":2823634,"issuer":{"id":5689,"kind":"organization","name":"FOSTER L B CO"},"owners":[{"id":42082,"kind":"person","name":"THALMAN WILLIAM M","position":1,"cik":"0001104808","reported_name":"THALMAN WILLIAM M","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Senior VP & CFO"}}],"security":"Common Stock","published_at":"2021-03-02T21:17:32.000Z","date":"2021-03-01","kind":"grant","acquired":true,"shares":15000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Award of time vested restricted stock, which shall vest in 33-1/3 increments on each of the first, second and third anniversaries of the date of the grant."}],"balance_after":15000,"source":{"system":"sec-edgar","filing":"0001567619-21-005356","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/352825/000156761921005356/doc1.xml","form_type":"4"}}]}