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The RSUs shall vest annually over a four year period, beginning on January 31, 2021, so that the RSUs will be fully vested on January 31, 2025, subject to the reporting person's continued service through each such vesting date."}],"balance_after":5808,"source":{"system":"sec-edgar","filing":"0001209191-21-008326","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1716621/000120919121008326/doc4.xml","form_type":"4"}},{"id":2897586,"issuer":{"id":7487,"kind":"organization","name":"ClearSign Technologies Corp","symbol":"CLIR"},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Option to Purchase Common Stock","published_at":"2021-01-25T22:59:15.000Z","date":"2021-01-22","kind":"grant","acquired":true,"shares":22750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On January 22, 2021, the Issuer's board of directors approved compensation to be paid to the Issuer's non-executive directors for services provided to the Issuer during the period from January 1, 2021 to March 31, 2021. The reporting person is a non-executive director. As compensation for their services, each non-executive director was awarded options for shares of common stock having an exercise price of $3.97. The options fully vest on April 1, 2021, subject to the reporting person's continued service as a non-executive director to the Issuer. The total numbers of option shares awarded was based on the services provided by the director. These services include Board participation, committee participation, committee chair responsibilities and lead director responsibilities, if any. The award was recommended to the Issuer's board of directors by its compensation committee and issued from the Issuer's 2011 Equity Incentive Plan."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On January 22, 2021, the Issuer's board of directors approved compensation to be paid to the Issuer's non-executive directors for services provided to the Issuer during the period from January 1, 2021 to March 31, 2021. The reporting person is a non-executive director. As compensation for their services, each non-executive director was awarded options for shares of common stock having an exercise price of $3.97. The options fully vest on April 1, 2021, subject to the reporting person's continued service as a non-executive director to the Issuer. The total numbers of option shares awarded was based on the services provided by the director. These services include Board participation, committee participation, committee chair responsibilities and lead director responsibilities, if any. The award was recommended to the Issuer's board of directors by its compensation committee and issued from the Issuer's 2011 Equity Incentive Plan."}],"balance_after":22750,"derivative":{"exercise_price":3.97,"exercise_date":"2021-04-01","expiration_date":"2031-01-21","underlying":"Common Stock","underlying_shares":22750},"source":{"system":"sec-edgar","filing":"0001104659-21-007293","document":"tm214006d3_4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1434524/000110465921007293/tm214006d3_4.xml","form_type":"4"}},{"id":2969747,"issuer":{"id":7487,"kind":"organization","name":"ClearSign Technologies Corp","symbol":"CLIR"},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Option to Purchase Common Stock","published_at":"2020-11-23T21:03:40.000Z","date":"2020-11-19","kind":"grant","acquired":true,"shares":22750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On November 19, 2020 the Issuer's board of directors approved compensation to be paid to the Issuer's non-executive directors for services provided to the Issuer during the period from October 1, 2020 to December 31, 2020.  The reporting person is a non-executive director.  As compensation for their services, each non- executive director was awarded options for shares of common stock having an exercise price of $2.38.  The total numbers of option shares awarded was based on the services provided by the director.  These services include board participation, committee participation, committee chair responsibilities and lead director responsibilities, if any.  The award was issued from the Issuer's 2011 Equity Incentive Plan."}],"balance_after":22750,"derivative":{"exercise_price":2.38,"exercise_date":"2020-11-19","expiration_date":"2020-11-18","underlying":"Common Stock","underlying_shares":22750},"source":{"system":"sec-edgar","filing":"0001104659-20-128455","document":"tm2036637d3_4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1434524/000110465920128455/tm2036637d3_4.xml","form_type":"4"}},{"id":3046292,"issuer":{"id":7487,"kind":"organization","name":"ClearSign Technologies Corp","symbol":"CLIR"},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock/CLIR","published_at":"2020-08-26T20:01:40.000Z","date":"2020-08-24","kind":"purchase","acquired":true,"shares":5000,"price":2,"value":10000.0,"ownership":{"direct":true},"balance_after":54249,"source":{"system":"sec-edgar","filing":"0001104659-20-098675","document":"tm2029421d2_4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1434524/000110465920098675/tm2029421d2_4.xml","form_type":"4"}},{"id":3050983,"issuer":{"id":7487,"kind":"organization","name":"ClearSign Technologies Corp","symbol":"CLIR"},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Option to Purchase Common Stock","published_at":"2020-08-20T20:51:23.000Z","date":"2020-08-18","kind":"grant","acquired":true,"shares":22750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On August 18, 2020 the Issuer's Board of Directors approved compensation to be paid to the Issuer's non-executive directors for services provided to the Issuer during the period from July 1, 2020 to September 30, 2020. The reporting person is a non-executive director. As compensation for their services, each non- executive director was awarded options for shares of common stock having an exercise price of $2.30. The total numbers of option shares awarded was based on the services provided by the director. These services include Board participation, committee participation, committee chair responsibilities and lead director responsibilities, if any. The award was issued from the Issuer's 2011 Equity Incentive Plan."}],"balance_after":22750,"derivative":{"exercise_price":2.3,"exercise_date":"2020-08-18","expiration_date":"2030-08-17","underlying":"Common Stock","underlying_shares":22750},"source":{"system":"sec-edgar","filing":"0001104659-20-097274","document":"tm2029083-2_4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1434524/000110465920097274/tm2029083-2_4.xml","form_type":"4"}},{"id":3140719,"issuer":{"id":7487,"kind":"organization","name":"ClearSign Technologies Corp","symbol":"CLIR"},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Option to Purchase Common Stock","published_at":"2020-05-20T20:30:42.000Z","date":"2020-05-18","kind":"grant","acquired":true,"shares":22750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On May 18, 2020 the Compensation Committee of the Issuer's board of directors, in accordance with a compensation policy approved by the board of directors, approved compensation to be paid to the Issuer's non-executive directors for services provided and to be provided to the Issuer during the period from April 1, 2020 to June 30, 2020. The reporting person is a non-executive director. As compensation for their services, each non- executive director was awarded options for shares of common stock having an exercise price of $0.54. The total number of option shares awarded was based on the services provided by the director. These services include Board participation, committee participation, committee chair responsibilities and lead director responsibilities, if any. The award was issued from the Issuer's 2011 Equity Incentive Plan."}],"balance_after":22750,"derivative":{"exercise_price":0.54,"exercise_date":"2020-05-18","expiration_date":"2030-05-18","underlying":"Common Stock","underlying_shares":22750},"source":{"system":"sec-edgar","filing":"0001104659-20-064281","document":"tm2020299d3_4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1434524/000110465920064281/tm2020299d3_4.xml","form_type":"4"}},{"id":3183012,"issuer":{"id":7487,"kind":"organization","name":"ClearSign Technologies Corp","symbol":"CLIR"},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Option to Purchase Common Stock","published_at":"2020-04-03T22:33:28.000Z","date":"2020-04-01","kind":"grant","acquired":true,"shares":22750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On April 1, 2020 the Issuer's board of directors approved compensation to be paid to the Issuer's non-executive directors for services provided to the Issuer during the period from January 1, 2020 to March 31, 2020. The reporting person is a non-executive director. As compensation for their services, each non-executive director was awarded options for shares of common stock having an exercise price of $0.72. The total number of option shares awarded was based on the services provided by the director. These services include Board participation, committee participation, committee chair responsibilities and lead director responsibilities, if any. The option was issued from the Issuer's 2011 Equity Incentive Plan. The right to exercise the option and purchase the option shares vested on the date of award."}],"balance_after":22750,"derivative":{"exercise_price":0.72,"exercise_date":"2020-04-01","expiration_date":"2030-04-01","underlying":"Common Stock","underlying_shares":22750},"source":{"system":"sec-edgar","filing":"0001104659-20-043279","document":"tm2014958-4_4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1434524/000110465920043279/tm2014958-4_4.xml","form_type":"4"}},{"id":3315899,"issuer":{"id":7979,"kind":"organization","name":"Aqua Metals, Inc."},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Share Units","published_at":"2020-01-08T01:15:41.000Z","date":"2020-01-03","kind":"grant","acquired":true,"shares":20378,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Includes 20,378 shares underlying restricted stock units (\"RSUs\") that are not yet vested and deliverable. All RSUs shall be settled in common shares only and will vest and be delivered on March 31, 2020."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"In accordance with Instruction 4 to this Form, Column 9 reports only total beneficial ownership of RSUs, the \"class\" of derivative security reported in Column 1."}],"balance_after":20378,"derivative":{"exercise_price":0,"exercise_date":"2020-03-31","expiration_date":"2025-03-31","underlying":"Common Shares","underlying_shares":20378},"source":{"system":"sec-edgar","filing":"0001621832-20-000018","document":"wf-form4_157844612124687.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1621832/000162183220000018/wf-form4_157844612124687.xml","form_type":"4"}},{"id":3384562,"issuer":{"id":7487,"kind":"organization","name":"ClearSign Technologies Corp","symbol":"CLIR"},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Option to Purchase Common Stock","published_at":"2019-10-31T20:31:31.000Z","date":"2019-05-09","kind":"grant","acquired":true,"shares":91000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On May 9, 2019 the Issuer's board of directors approved compensation to be paid to the Issuer's non-executive directors for services provided to the Issuer during 2019. The reporting person is an non-executive director. As compensation for their services, each non-executive director was awarded options for shares of common stock having an exercise price of $1.00. The total number of option shares awarded was based on the services provided by the director. These services include Board participation, committee participation, committee chair responsibilites and lead director responsibilities, if any. The shares of common stock are issued from the Company's 2011 Equity Incentive Plan. The right to purchase the option shares vests in equal increments as follows: the right to purchase 22,750 shares vested on May 9, 2019 and the right to purchase the remaining 68,250 shares will vest in equal increments on the last day of each calendar quarter."}],"balance_after":91000,"derivative":{"exercise_price":1,"expiration_date":"2029-04-01","underlying":"Common Stock","underlying_shares":91000},"source":{"system":"sec-edgar","filing":"0001104659-19-058382","document":"tm1921550-5_4aseq1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1434524/000110465919058382/tm1921550-5_4aseq1.xml","form_type":"4/A","original_submission_date":"2019-05-13"}},{"id":3397126,"issuer":{"id":7979,"kind":"organization","name":"Aqua Metals, Inc."},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Share Units","published_at":"2019-10-04T21:41:23.000Z","date":"2019-10-02","kind":"grant","acquired":true,"shares":8824,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Includes 8,824 shares underlying restricted stock units (\"RSUs\") that are not yet vested and deliverable.  All RSUs shall be settled in common shares only and will vest and be delivered on December 31, 2019."}],"balance_after":8824,"derivative":{"exercise_price":0,"exercise_date":"2019-12-31","expiration_date":"2023-12-31","underlying":"Common Shares","underlying_shares":8824},"source":{"system":"sec-edgar","filing":"0001621832-19-000105","document":"wf-form4_157022526004359.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1621832/000162183219000105/wf-form4_157022526004359.xml","form_type":"4"}},{"id":3443234,"issuer":{"id":7979,"kind":"organization","name":"Aqua Metals, Inc."},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2019-08-08T15:42:19.000Z","date":"2019-08-06","kind":"purchase","acquired":true,"shares":2000,"price":1.5484,"value":3096.8,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes 9,317 shares underlying restricted stock units (\"RSUs\") that are not yet vested and deliverable.  All RSUs shall be settled in common shares only and will vest and be delivered on September 30, 2019."}],"balance_after":11317,"source":{"system":"sec-edgar","filing":"0001621832-19-000084","document":"wf-form4_156527892164677.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1621832/000162183219000084/wf-form4_156527892164677.xml","form_type":"4"}},{"id":3465658,"issuer":{"id":7979,"kind":"organization","name":"Aqua Metals, Inc."},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2019-07-09T00:15:50.000Z","date":"2019-07-03","kind":"grant","acquired":true,"shares":9317,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":9317,"source":{"system":"sec-edgar","filing":"0001621832-19-000068","document":"wf-form4_156263133457780.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1621832/000162183219000068/wf-form4_156263133457780.xml","form_type":"4"}},{"id":3467902,"issuer":{"id":7487,"kind":"organization","name":"ClearSign Technologies Corp","symbol":"CLIR"},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Option to Purchase Common Stock","published_at":"2019-07-03T21:23:52.000Z","date":"2019-06-30","kind":"grant","acquired":true,"shares":22750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"On May 9, 2019 the Issuer's board of directors approved compensation to be paid to the Issuer's non-executive directors for services provided to the Issuer during 2019.  The reporting person is an non-executive director.  As compensation for their services, each non-executive director was awarded options for shares of common stock having an exercise price of $1.00.  The total number of option shares awarded was based on the services provided by the director.  These services include Board participation, committee participation, committee chair responsibilites and lead director responsibilities, if any. The right to purchase the common stock is earned in quarterly increments.  The option was issued from the Company's 2011 Equity Incentive Plan."}],"balance_after":45500,"derivative":{"exercise_price":1,"exercise_date":"2019-06-30","expiration_date":"2029-04-01","underlying":"Common Stock","underlying_shares":22750},"source":{"system":"sec-edgar","filing":"0001144204-19-033825","document":"tv524823_4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1434524/000114420419033825/tv524823_4.xml","form_type":"4"}},{"id":3529767,"issuer":{"id":7487,"kind":"organization","name":"ClearSign Technologies Corp","symbol":"CLIR"},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Option to Purchase Common Stock","published_at":"2019-05-13T22:47:16.000Z","date":"2019-05-09","kind":"grant","acquired":true,"shares":22750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"On May 9, 2019, the Issuer's board of directors approved compensation to be paid to the Issuer's non-executive directors for services provided to the Issuer during the first quarter of 2019.  The reporting person is a non-executive director.   The number of option shares awarded was based on the services provided by the director.  These services include, depending on the individual, Board participation, committee participation, committee chair responsibilities and lead director responsibilities, if any.  The shares of common stock are issued from the Company's 2011 Equity Incentive Plan."}],"balance_after":22750,"derivative":{"exercise_price":1,"expiration_date":"2029-04-01","underlying":"Common Stock","underlying_shares":22750},"source":{"system":"sec-edgar","filing":"0001144204-19-025696","document":"tv521422_4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1434524/000114420419025696/tv521422_4.xml","form_type":"4"}},{"id":3703842,"issuer":{"id":7487,"kind":"organization","name":"ClearSign Technologies Corp","symbol":"CLIR"},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock/CLIR","published_at":"2019-01-05T01:07:06.000Z","date":"2018-12-31","kind":"grant","acquired":true,"shares":6756,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On May 3, 2018 the Issuer's board of directors approved annual compensation for the Issuer's non-executive directors. The reporting person is a non-executive director. As partial compensation for services provided to the Issuer during 2018, each non-executive director was granted 27,027 shares of common stock having a per share value of $1.85, the closing price of the Issuer's common stock on the date of grant. The common stock is earned in quarterly increments and is issued on the last business day of each calendar quarter. The shares of common stock are issued from the Company's 2011 Equity Incentive Plan."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On May 3, 2018 the Issuer's board of directors approved annual compensation for the Issuer's non-executive directors. The reporting person is a non-executive director. As partial compensation for services provided to the Issuer during 2018, each non-executive director was granted 27,027 shares of common stock having a per share value of $1.85, the closing price of the Issuer's common stock on the date of grant. The common stock is earned in quarterly increments and is issued on the last business day of each calendar quarter. The shares of common stock are issued from the Company's 2011 Equity Incentive Plan."}],"balance_after":49249,"source":{"system":"sec-edgar","filing":"0001144204-19-000736","document":"tv510453_4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1434524/000114420419000736/tv510453_4.xml","form_type":"4"}},{"id":3801184,"issuer":{"id":7487,"kind":"organization","name":"ClearSign Technologies Corp","symbol":"CLIR"},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock/CLIR","published_at":"2018-10-02T23:00:57.000Z","date":"2018-09-28","kind":"grant","acquired":true,"shares":6757,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On May 3, 2018 the Issuer's board of directors approved annual compensation for the Issuer's independent directors.  The reporting person is an independent director.  As partial compensation for services provided to the Issuer during 2018, each independent director was granted 27,027 shares of common stock having a per share value of $1.85, the closing price of the Issuer's common stock on the date of grant.  The common stock is earned in quarterly increments and is issued on the last business day of each calendar quarter.  The shares of common stock are issued from the Company's 2011 Equity Incentive Plan."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On May 3, 2018 the Issuer's board of directors approved annual compensation for the Issuer's independent directors.  The reporting person is an independent director.  As partial compensation for services provided to the Issuer during 2018, each independent director was granted 27,027 shares of common stock having a per share value of $1.85, the closing price of the Issuer's common stock on the date of grant.  The common stock is earned in quarterly increments and is issued on the last business day of each calendar quarter.  The shares of common stock are issued from the Company's 2011 Equity Incentive Plan."}],"balance_after":42493,"source":{"system":"sec-edgar","filing":"0001144204-18-052152","document":"tv504084_4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1434524/000114420418052152/tv504084_4.xml","form_type":"4"}},{"id":3874805,"issuer":{"id":7487,"kind":"organization","name":"ClearSign Technologies Corp","symbol":"CLIR"},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock/CLIR","published_at":"2018-07-03T19:07:26.000Z","date":"2018-06-29","kind":"grant","acquired":true,"shares":13514,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On May 3, 2018 the Issuer's board of directors approved annual compensation for the Issuer's independent directors.  The reporting person is an independent director.  As partial compensation for services provided to the Issuer during 2018, each independent director was granted 27,027 shares of common stock having a per share value of $1.85, the closing price of the Issuer's common stock on the date of grant.  The common stock is earned in quarterly increments and is issued on the last business day of each calendar quarter.  The shares of common stock are issued from the Company's 2011 Equity Incentive Plan.  Because the grant was approved in the second quarter,  the shares of common stock for both the first and second quarter of 2018 were issued on June 29, 2018."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On May 3, 2018 the Issuer's board of directors approved annual compensation for the Issuer's independent directors.  The reporting person is an independent director.  As partial compensation for services provided to the Issuer during 2018, each independent director was granted 27,027 shares of common stock having a per share value of $1.85, the closing price of the Issuer's common stock on the date of grant.  The common stock is earned in quarterly increments and is issued on the last business day of each calendar quarter.  The shares of common stock are issued from the Company's 2011 Equity Incentive Plan.  Because the grant was approved in the second quarter,  the shares of common stock for both the first and second quarter of 2018 were issued on June 29, 2018."}],"balance_after":35736,"source":{"system":"sec-edgar","filing":"0001144204-18-037200","document":"tv497942_4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1434524/000114420418037200/tv497942_4.xml","form_type":"4"}},{"id":4027052,"issuer":{"id":7487,"kind":"organization","name":"ClearSign Technologies Corp","symbol":"CLIR"},"owners":[{"id":70871,"kind":"person","name":"Meline Susanne","position":1,"cik":"0001731684","reported_name":"Meline Susanne","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock/CLIR","published_at":"2018-02-28T21:31:37.000Z","date":"2018-02-27","kind":"purchase","acquired":true,"shares":22222,"price":2.25,"value":49999.5,"ownership":{"direct":true},"balance_after":22222,"source":{"system":"sec-edgar","filing":"0001144204-18-011796","document":"tv487222_4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1434524/000114420418011796/tv487222_4.xml","form_type":"4"}}]}