The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jan 28, 2026 | Johnson Robert D | Director | Grant(A) | 6K | — | $0 |
| Jan 28, 2026 | Reitman Alayne L | Director | Grant(A) | 20K | — | $0 |
| Jan 28, 2026 | Silk Mark J | Director, 10% Owner | Grant(A) | 6K | — | $0 |
| Jan 28, 2026 | Molten Donald C Jr. | Director | Grant(A) | 15K | — | $0 |
| Dec 16, 2025 | Scherff George | CEO | Grant(A) | 50K | — | $0 |
| Jan 29, 2025 | Johnson Robert D | Director | Grant(A) | 6K | — | $0 |
| Jan 29, 2025 | Reitman Alayne L | Director | Grant(A) | 20K | — | $0 |
| Jan 29, 2025 | Silk Mark J | Director, 10% Owner | Grant(A) | 6K | — | $0 |
| Jan 29, 2025 | Molten Donald C Jr. | Director | Grant(A) | 15K | — | $0 |
| Jan 31, 2024 | Gotschall Jeffrey P | Director | Grant(A) | 6K | — | $0 |
| Jan 31, 2024 | Reitman Alayne L | Director | Grant(A) | 9K | — | $0 |
| Jan 31, 2024 | Smith Hudson | Director | Grant(A) | 6K | — | $0 |
| Jan 31, 2024 | Silk Mark J | Director, 10% Owner | Grant(A) | 6K | — | $0 |
| Jan 31, 2024 | Molten Donald C Jr. | Director | Grant(A) | 6K | — | $0 |
| Nov 21, 2023 | Kubera Thomas Robert | Chief Financial Officer | Grant(A) | 9K | — | $0 |
| Nov 21, 2023 | Knapper Peter William | President & CEO, Director | Grant(A) | 10K | — | $0 |
| Jan 31, 2023 | Reitman Alayne L | Director | Grant(A) | 8K | — | $0 |
| Jan 31, 2023 | Smith Hudson | Director | Grant(A) | 6K | — | $0 |
| Jan 31, 2023 | Silk Mark J | Director, 10% Owner | Grant(A) | 6K | — | $0 |
| Jan 31, 2023 | Molten Donald C Jr. | Director | Grant(A) | 6K | — | $0 |
| Jan 31, 2023 | Gotschall Jeffrey P | Director | Grant(A) | 6K | $6,000.00as filed | — |
| Nov 1, 2022 | Kubera Thomas Robert | Chief Financial Officer | Grant(A) | 5K | — | $0 |
| Nov 1, 2022 | Smith Hudson | Director | Grant(A) | 10K | — | $0 |
| Nov 1, 2022 | Knapper Peter William | President & CEO, Director | Grant(A) | 5K | — | $0 |
| Aug 24, 2022 | Wells Norman E Jr. | Director | Sell(S) | 4K | $3.39 | $14K |
| Jan 26, 2022 | Smith Hudson | Director | Grant(A) | 6K | — | $0 |
| Jan 26, 2022 | Silk Mark J | Director, 10% Owner | Grant(A) | 6K | — | $0 |
| Jan 26, 2022 | Molten Donald C Jr. | Director | Grant(A) | 6K | — | $0 |
| Jan 26, 2022 | Wells Norman E Jr. | Director | Grant(A) | 10K | — | $0 |
| Jan 26, 2022 | Reitman Alayne L | Director | Grant(A) | 6K | — | $0 |
| Jan 26, 2022 | Gotschall Jeffrey P | Director | Grant(A) | 6K | — | $0 |
| Dec 14, 2021 | Smith Hudson | Director | Gift(G) | 8K | — | $0 |
| Nov 24, 2021 | Knapper Peter William | President & CEO, Director | Grant(A) | 6K | — | — |
| Nov 24, 2021 | Kubera Thomas Robert | Chief Financial Officer | Grant(A) | 4K | — | — |
| Mar 11, 2021 | Reitman Alayne L | Director | Sell(S) | 1K | $10.48 | $14K |
| Mar 10, 2021 | Reitman Alayne L | Director | Sell(S) | 1K | $10.25 | $10K |
| Feb 16, 2021 | Knapper Peter William | President & CEO, Director | Sell(S) | 2K | $9.40 | $19K |
| Jan 27, 2021 | Gotschall Jeffrey P | Director | Grant(A) | 5K | — | $0 |
| Jan 27, 2021 | Silk Mark J | Director, 10% Owner | Grant(A) | 5K | — | $0 |
| Jan 27, 2021 | Smith Hudson | Director | Grant(A) | 5K | — | $0 |
| Jan 27, 2021 | Wells Norman E Jr. | Director | Grant(A) | 7K | — | $0 |
| Jan 27, 2021 | Reitman Alayne L | Director | Grant(A) | 5K | — | $0 |
| Jan 27, 2021 | Molten Donald C Jr. | Director | Grant(A) | 5K | — | $0 |
| Nov 17, 2020 | Kubera Thomas Robert | Chief Financial Officer | Grant(A) | 6K | — | — |
| Nov 17, 2020 | Knapper Peter William | President & CEO, Director | Grant(A) | 20K | — | — |
| Aug 25, 2020 | Molten Donald C Jr. | Director | Sell(S) | 3K | $4.05 | $11K |
| Aug 19, 2020 | Molten Donald C Jr. | Director | Sell(S) | 200 | $4.10 | $820 |
| Aug 17, 2020 | Molten Donald C Jr. | Director | Sell(S) | 797 | $4.11 | $3K |
| Aug 13, 2020 | Molten Donald C Jr. | Director | Sell(S) | 6K | $4.08 | $25K |
| Aug 12, 2020 | Molten Donald C Jr. | Director | Sell(S) | 228 | $4.14 | $944 |
| Jun 15, 2020 | Knapper Peter William | President & CEO, Director | Buy(P) | 11K | $4.25 | $45K |
| Jun 15, 2020 | Silk Mark J | Director, 10% Owner | Buy(P) | 9K | $4.24 | $37K |
| Jun 12, 2020 | Silk Mark J | Director, 10% Owner | Buy(P) | 6K | $4.25 | $26K |
| Jun 11, 2020 | Silk Mark J | Director, 10% Owner | Buy(P) | 17K | $4.22 | $71K |
| Jan 30, 2020 | Reitman Alayne L | Director | Grant(A) | 9K | — | $0 |
| Jan 30, 2020 | Molten Donald C Jr. | Director | Grant(A) | 9K | — | $0 |
| Jan 30, 2020 | Smith Hudson | Director | Grant(A) | 9K | — | $0 |
| Jan 30, 2020 | Gotschall Jeffrey P | Director | Grant(A) | 9K | — | $0 |
| Jan 30, 2020 | Silk Mark J | Director, 10% Owner | Grant(A) | 9K | — | $0 |
| Jan 30, 2020 | Wells Norman E Jr. | Director | Grant(A) | 13K | — | $0 |
| Nov 25, 2019 | Knapper Peter William | President & CEO, Director | Grant(A) | 34K | — | — |
| Nov 25, 2019 | Kubera Thomas Robert | Chief Financial Officer | Grant(A) | 14K | — | — |
| Jan 31, 2019 | Smith Hudson | Director | Grant(A) | 11K | — | $0 |
| Jan 31, 2019 | Silk Mark J | Director, 10% Owner | Grant(A) | 11K | — | $0 |
| Jan 31, 2019 | Wells Norman E Jr. | Director | Grant(A) | 7K | — | $0 |
| Jan 31, 2019 | Molten Donald C Jr. | Director | Grant(A) | 11K | — | $0 |
| Jan 31, 2019 | Gotschall Jeffrey P | Director | Grant(A) | 11K | — | $0 |
| Jan 31, 2019 | Reitman Alayne L | Director | Grant(A) | 11K | — | $0 |
| Dec 17, 2018 | Kubera Thomas Robert | Chief Financial Officer | Buy(P) | 1K | $3.50 | $4K |
| Dec 17, 2018 | Smith Hudson | Director | Gift(G) | 6K | — | $0 |
| Dec 17, 2018 | Smith Hudson | Director | Buy(P) | 2K | $3.45 | $7K |
| Dec 14, 2018 | Molten Donald C Jr. | Director | Buy(P) | 3K | $3.97 | $12K |
| Dec 13, 2018 | Molten Donald C Jr. | Director | Buy(P) | 2K | $3.80 | $8K |
| Dec 12, 2018 | Knapper Peter William | President & CEO, Director | Grant(A) | 3K | $3.78 | $11K |
| Nov 14, 2018 | Knapper Peter William | President & CEO, Director | Grant(A) | 19K | — | — |
| Nov 14, 2018 | Kubera Thomas Robert | Chief Financial Officer | Grant(A) | 5K | — | — |
| Sep 13, 2018 | Silk Mark J | Director, 10% Owner | Gift(G) | 300K | — | $0 |
| Sep 13, 2018 | Silk Mark J | Director, 10% Owner | Gift(G) | 300K | — | $0 |
| Aug 24, 2018 | Knapper Peter William | President & CEO, Director | Buy(P) | 2K | $5.20 | $10K |
| Aug 23, 2018 | Knapper Peter William | President & CEO, Director | Buy(P) | 36 | $5.15 | $185 |
| Jan 31, 2018 | Silk Mark J | Director, 10% Owner | Grant(A) | 7K | — | — |
| Jan 31, 2018 | Smith Hudson | Director | Grant(A) | 7K | — | — |
| Jan 31, 2018 | Gotschall Jeffrey P | Director | Grant(A) | 7K | — | — |
| Jan 31, 2018 | Wells Norman E Jr. | Director | Grant(A) | 13K | — | — |
| Jan 31, 2018 | Reitman Alayne L | Director | Grant(A) | 7K | — | — |
| Jan 31, 2018 | Molten Donald C Jr. | Director | Grant(A) | 7K | — | — |
| Nov 15, 2017 | Knapper Peter William | President & CEO, Director | Grant(A) | 30K | — | — |
| Nov 15, 2017 | Kubera Thomas Robert | Corporate Controller | Grant(A) | 3K | — | — |
| May 31, 2017 | Incanno Salvatore | VP of Finance & CFO | Option exercise(M) | 4K | — | $0 |
| May 31, 2017 | Incanno Salvatore | VP of Finance & CFO | Tax withholding(F) | 1K | $7.58 | $9K |
| May 31, 2017 | Incanno Salvatore | VP of Finance & CFO | Option exercise(M) | 4K | — | $0 |
| Jan 25, 2017 | Smith Hudson | Director | Grant(A) | 5K | — | — |
| Jan 25, 2017 | Gotschall Jeffrey P | Director | Grant(A) | 5K | — | — |
| Jan 25, 2017 | Reitman Alayne L | Director | Grant(A) | 5K | — | — |
| Jan 25, 2017 | Silk Mark J | Director, 10% Owner | Grant(A) | 5K | — | — |
| Jan 25, 2017 | Molten Donald C Jr. | Director | Grant(A) | 5K | — | — |
| Jan 25, 2017 | Wells Norman E Jr. | Director | Grant(A) | 9K | — | — |
| Jan 9, 2017 | Kubera Thomas Robert | Corporate Controller | Grant(A) | 2K | — | — |
| Jan 9, 2017 | Incanno Salvatore | VP of Finance & CFO | Grant(A) | 6K | — | — |
| Jan 9, 2017 | Knapper Peter William | President & CEO, Director | Grant(A) | 11K | — | — |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Coverage: Form 4 filings indexed 2006-01-02 → 2026-09-03. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).
Connected pages for SIF