FSS · Insider Trading
Federal Signal Corp.
Every open-market purchase and sale reported by FSS officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-28 | Eric A. Vaillancourt | Director | A | +104 | — |
| 2026-09-28 | Richard A Maue | Director | A | +108 | — |
| 2026-08-06 | Brenda Reichelderfer | Director | MIXED | −13,720 | −$795.27K |
| 2026-08-06 | Brenda Reichelderfer | Director | MIXED | −13,720 | −$795.27K |
| 2026-08-05 | Diane Bonina | VP, Gen'l Counsel & Secretary | MIXED | −4,308 | −$1.86M |
| 2026-06-29 | Richard A Maue | Director | A | +99 | — |
| 2026-06-29 | Eric A. Vaillancourt | Director | A | +96 | — |
| 2026-05-05 | Ian A. Hudson | S.V.P. & CFO | F | −1,657 | −$194.68K |
| 2026-05-05 | Jennifer L Sherman | President & CEO | MIXED | +21,867 | −$3.76M |
| 2026-05-05 | Diane Bonina | VP, Gen'l Counsel & Secretary | F | −962 | −$113.03K |
| 2026-05-05 | Mark Weber | SVP & COO | F | −2,278 | −$267.64K |
| 2026-04-23 | Katrina L Helmkamp | Director | A | +1,277 | — |
| 2026-04-23 | John L Workman | Director | A | +1,277 | — |
| 2026-04-23 | Shashank Patel | Director | A | +1,277 | — |
| 2026-04-23 | Eugene Joseph Lowe III | Director | A | +1,277 | — |
| 2026-04-23 | Richard A Maue | Director | A | +1,277 | — |
| 2026-04-23 | Brenda Reichelderfer | Director | A | +1,674 | — |
| 2026-04-23 | Eric A. Vaillancourt | Director | A | +1,277 | — |
| 2026-03-30 | Richard A Maue | Director | A | +43 | — |
| 2026-03-30 | Eric A. Vaillancourt | Director | A | +42 | — |
| 2026-03-10 | Richard A Maue | Director | Buy | +2,000 | +$221.53K |
| 2026-03-04 | Brenda Reichelderfer | Director | G | −215 | — |
| 2026-03-02 | Jennifer L Sherman | President & CEO | MIXED | +48,863 | −$3.46M |
| 2026-03-02 | Felix Boeschen | VP Strategy/Investor Relations | A | +590 | — |
| 2026-03-02 | Ian A. Hudson | S.V.P. & CFO | MIXED | +10,358 | −$750.01K |
| 2026-03-02 | Diane Bonina | VP, Gen'l Counsel & Secretary | MIXED | +5,994 | −$437.35K |
| 2026-03-02 | Mark Weber | SVP & COO | MIXED | +14,904 | −$1.16M |
| 2025-12-19 | Jennifer L Sherman | President & CEO | G | −1,805 | — |
| 2025-11-12 | John L Workman | Director | G | −2,500 | — |
| 2025-11-10 | Mark Weber | SVP & COO | MIXED | — | −$3.52M |
| 2025-11-06 | Brenda Reichelderfer | Director | G | −1,848 | — |
| 2025-11-05 | Dennis J Martin | Director | G | −55,859 | — |
| 2025-06-30 | Katrina L Helmkamp | Director | A | +131 | — |
| 2025-05-06 | Felix Boeschen | VP Strategy/Investor Relations | A | +650 | — |
| 2025-05-06 | Diane Bonina | VP, Gen'l Counsel & Secretary | MIXED | +418 | −$113.85K |
| 2025-05-06 | Mark Weber | SVP & COO | MIXED | +371 | −$267.88K |
| 2025-05-06 | Jennifer L Sherman | President & CEO | MIXED | +4,097 | −$857.14K |
| 2025-05-06 | Ian A. Hudson | S.V.P. & CFO | MIXED | +933 | −$194.20K |
| 2025-04-23 | Dennis J Martin | Director | A | +1,969 | — |
| 2025-04-23 | Katrina L Helmkamp | Director | A | +1,969 | — |
| 2025-04-23 | Brenda Reichelderfer | Director | A | +2,580 | — |
| 2025-04-23 | Eugene Joseph Lowe III | Director | A | +1,969 | — |
| 2025-04-23 | Shashank Patel | Director | A | +1,969 | — |
| 2025-04-23 | John L Workman | Director | A | +1,969 | — |
| 2025-04-09 | Jennifer L Sherman | President & CEO | MIXED | +5,564 | −$312.71K |
| 2025-03-31 | Katrina L Helmkamp | Director | A | +164 | — |
| 2025-03-20 | Diane Bonina | VP, Gen'l Counsel & Secretary | MIXED | +5 | −$707 |
| 2025-03-17 | Diane Bonina | VP, Gen'l Counsel & Secretary | I | +662 | +$50.00K |
| 2025-03-03 | Jennifer L Sherman | President & CEO | Buy | +1,250 | +$102.90K |
| 2025-02-28 | Ian A. Hudson | S.V.P. & CFO | MIXED | +12,260 | −$803.06K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Jennifer L Sherman | President & CEO | 701,945 | $78.67M |
| Dennis J Martin | Director | 452,238 | $50.68M |
| Ian A. Hudson | S.V.P. & CFO | 96,663 | $10.83M |
| Mark Weber | SVP & COO | 86,770 | $9.72M |
| John L Workman | Director | 58,734 | $6.58M |
| Brenda Reichelderfer | Director | 51,958 | $5.82M |
| Diane Bonina | VP, Gen'l Counsel & Secretary | 22,804 | $2.56M |
| Eugene Joseph Lowe III | Director | 22,571 | $2.53M |
| Shashank Patel | Director | 11,914 | $1.34M |
| Katrina L Helmkamp | Director | 5,603 | $627.96K |
| Richard A Maue | Director | 3,527 | $395.29K |
| Felix Boeschen | VP Strategy/Investor Relations | 1,726 | $193.44K |
| Eric A. Vaillancourt | Director | 1,519 | $170.24K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the FSS quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.