TSSI · Insider Trading
TSS, Inc. Common Stock
Every open-market purchase and sale reported by TSSI 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 |
|---|---|---|---|---|---|
| 2026-10-06 | Daniel M Chism | Chief Financial Officer | F | −15,317 | −$204.94K |
| 2026-06-02 | Kieran Brennan | Senior Vice President | Sell | −10,000 | −$160.01K |
| 2026-06-02 | Peter H Woodward | Director | Sell | −300,000 | −$4.76M |
| 2026-05-08 | Darryll E Dewan | Chief Executive Officer | Sell | −50,000 | −$850.00K |
| 2026-04-24 | Darryll E Dewan | Chief Executive Officer | Sell | −50,000 | −$800.00K |
| 2026-04-22 | Karl Todd Marrott | Chief Operating Officer | MIXED | +201,348 | −$1.47M |
| 2026-04-17 | Karl Todd Marrott | Chief Operating Officer | Sell | −38,849 | −$585.82K |
| 2026-04-17 | Karl Todd Marrott | Chief Operating Officer | Sell | −800 | −$12.00K |
| 2026-04-16 | Daniel M Chism | Chief Financial Officer | Sell | −25,000 | −$375.00K |
| 2026-04-16 | Darryll E Dewan | Chief Executive Officer | Sell | −50,000 | −$750.00K |
| 2026-03-25 | Karl Todd Marrott | Chief Operating Officer | MIXED | +4,391 | −$7.55K |
| 2026-03-25 | Darryll E Dewan | Chief Executive Officer | A | +5,000 | — |
| 2026-03-25 | Kieran Brennan | Senior Vice President | MIXED | +2,804 | +$3.77K |
| 2026-03-25 | Daniel M Chism | Chief Financial Officer | MIXED | +4,391 | −$7.55K |
| 2026-03-17 | Kieran Brennan | Senior Vice President | Sell | −12,000 | −$147.24K |
| 2026-02-25 | Kieran Brennan | Senior Vice President | F | −9,019 | −$76.21K |
| 2026-02-25 | Karl Todd Marrott | Chief Operating Officer | F | −8,117 | −$68.59K |
| 2026-02-02 | Darryll E Dewan | Chief Executive Officer | F | −25,960 | −$290.75K |
| 2026-01-20 | Daniel M Chism | Chief Financial Officer | F | −12,175 | −$146.71K |
| 2026-01-20 | Karl Todd Marrott | Chief Operating Officer | F | −12,175 | −$146.71K |
| 2026-01-20 | Darryll E Dewan | Chief Executive Officer | F | −26,903 | −$324.18K |
| 2026-01-16 | Darryll E Dewan | Chief Executive Officer | A | +37,843 | — |
| 2026-01-16 | Vivek Mohindra | Director | A | +3,784 | — |
| 2026-01-16 | Daniel M Chism | Chief Financial Officer | A | +33,113 | — |
| 2026-01-16 | Richard M. Metzler | Director | A | +3,784 | — |
| 2026-01-16 | Michael John Fahy | Director | A | +3,784 | — |
| 2026-01-16 | Karl Todd Marrott | Chief Operating Officer | A | +29,801 | — |
| 2026-01-16 | Peter H Woodward | Director | A | +3,784 | — |
| 2026-01-16 | Kieran Brennan | Senior Vice President | A | +12,181 | — |
| 2026-01-12 | Daniel M Chism | Chief Financial Officer | M | +41,667 | +$71.67K |
| 2026-01-05 | Karl Todd Marrott | Chief Operating Officer | F | −13,539 | −$95.72K |
| 2026-01-05 | Darryll E Dewan | Chief Executive Officer | F | −13,539 | −$95.72K |
| 2025-12-11 | Peter H Woodward | Director | Sell | −51,700 | −$444.71K |
| 2025-12-05 | Karl Todd Marrott | Chief Operating Officer | G | −5,000 | — |
| 2025-11-19 | Michael John Fahy | Director | Buy | +5,000 | +$40.00K |
| 2025-11-13 | Vivek Mohindra | Director | A | +6,000 deriv. | — |
| 2025-09-12 | Daniel M Chism | Chief Financial Officer | Sell | −15,000 | −$242.55K |
| 2025-09-12 | Karl Todd Marrott | Chief Operating Officer | Sell | −11,100 | −$179.49K |
| 2025-08-29 | Daniel M Chism | Chief Financial Officer | Sell | −15,000 | −$243.50K |
| 2025-08-29 | Karl Todd Marrott | Chief Operating Officer | Sell | −26,825 | −$433.70K |
| 2025-06-11 | Kieran Brennan | Senior Vice President | Sell | −5,025 | −$106.03K |
| 2025-06-10 | Daniel M Chism | Chief Financial Officer | F | −20,755 | −$411.78K |
| 2025-06-05 | Kieran Brennan | Senior Vice President | Sell | −5,000 | −$75.00K |
| 2025-06-03 | Kieran Brennan | Senior Vice President | Sell | −20,000 | −$280.82K |
| 2025-05-30 | Kieran Brennan | Senior Vice President | Sell | −5,000 | −$67.50K |
| 2025-05-28 | Kieran Brennan | Senior Vice President | Sell | −10,000 | −$130.68K |
| 2025-01-21 | Darryll E Dewan | President and CEO | MIXED | +287,116 | −$151.90K |
| 2025-01-21 | Daniel M Chism | Chief Financial Officer | MIXED | +221,974 | −$94.63K |
| 2025-01-21 | Karl Todd Marrott | Chief Operating Officer | A | +250,000 | — |
| 2024-12-17 | Peter H Woodward | Director | Sell | −50,000 | −$453.69K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Karl Todd Marrott | Chief Operating Officer | 501,287 | $3.46M |
| Darryll E Dewan | Chief Executive Officer | 459,471 | $3.17M |
| Daniel M Chism | Chief Financial Officer | 322,898 | $2.23M |
| Kieran Brennan | Senior Vice President | 271,333 | $1.87M |
| Richard M. Metzler | Director | 153,784 | $1.06M |
| James Mulford Oliver III | CRO | 104,504 | $721.08K |
| Peter H Woodward | Director | 41,058 | $283.30K |
| Michael John Fahy | Director | 13,784 | $95.11K |
| Vivek Mohindra | Director | 3,784 | $26.11K |
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 TSSI 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.