David A. Dunbar
CIK 1595316 · View on SEC EDGAR ↗
Insider
First SEC filing: Feb. 18, 2026 · Latest: Feb. 18, 2026
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
0 buys (P)
5 sells (S)
Net:
$-10,434,150
+ 81 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
81 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 17, 2026 | SXI | S 10b5-1 | 5,000 | $255.87 | $1,279,350 | 88,973 Indirect | -5.32% | Disposed | 20.6% (price as of 2026-08-20) |
| Feb. 17, 2026 | SXI | S 10b5-1 | 10,000 | $255.98 | $2,559,800 | 93,973 Indirect | -9.62% | Disposed | 20.6% (price as of 2026-08-20) |
| Oct. 15, 2025 | SXI | S 10b5-1 | 13,000 | $235.00 | $3,055,000 | 103,973 Indirect | -11.11% | Disposed | 31.3% (price as of 2026-08-20) |
| Oct. 15, 2025 | SXI | S 10b5-1 | 5,000 | $235.00 | $1,175,000 | 116,973 Indirect | -4.10% | Disposed | 31.3% (price as of 2026-08-20) |
| Sept. 18, 2025 | SXI | S 10b5-1 | 11,000 | $215.00 | $2,365,000 | 121,973 Indirect | -8.27% | Disposed | 43.5% (price as of 2026-08-20) |
| Aug. 13, 2025 | SXI | S 10b5-1 | 16,000 | $200.00 | $3,200,000 | 115,576 Indirect | -12.16% | Disposed | 54.3% (price as of 2026-08-20) |
| March 7, 2024 | SXI | S 10b5-1 | 3,099 | $180.00 | $557,820 | 54,233 Indirect | -5.41% | Disposed | 71.5% (price as of 2026-08-20) |
| March 6, 2024 | SXI | S 10b5-1 | 4,901 | $180.00 | $882,180 | 57,332 Indirect | -7.88% | Disposed | 71.5% (price as of 2026-08-20) |
| Feb. 15, 2024 | SXI | S 10b5-1 | 5,000 | $165.00 | $825,000 | 62,233 Indirect | -7.44% | Disposed | 87.0% (price as of 2026-08-20) |
| May 9, 2023 | SXI | S 10b5-1 | 12,000 | $135.00 | $1,620,000 | 3,637 Indirect | -76.74% | Disposed | 128.6% (price as of 2026-08-20) |
| May 5, 2023 | SXI | S 10b5-1 | 8,000 | $130.00 | $1,040,000 | 15,637 Indirect | -33.85% | Disposed | 137.4% (price as of 2026-08-20) |
| April 3, 2023 | SXI | S 10b5-1 | 5,000 | $120.58 | $602,900 | 23,637 Indirect | -17.46% | Disposed | 156.0% (price as of 2026-08-20) |
| Jan. 31, 2023 | SXI | S 10b5-1 | 2,500 | $115.00 | $287,500 | 28,637 Indirect | -8.03% | Disposed | 168.4% (price as of 2026-08-20) |
| Nov. 11, 2021 | SXI | S 10b5-1 | 3,136 | $120.00 | $376,320 | 31,137 Indirect | -9.15% | Disposed | 157.2% (price as of 2026-08-20) |
| Nov. 5, 2021 | SXI | S 10b5-1 | 114 | $120.00 | $13,680 | 34,273 Indirect | -0.33% | Disposed | 157.2% (price as of 2026-08-20) |
| Oct. 29, 2021 | SXI | S 10b5-1 | 2,250 | $110.00 | $247,500 | 34,387 Indirect | -6.14% | Disposed | 180.6% (price as of 2026-08-20) |
| Feb. 19, 2021 | SXI | S 10b5-1 | 2,000 | $95.00 | $190,000 | 36,637 Indirect | -5.18% | Disposed | 224.9% (price as of 2026-08-20) |
| Jan. 6, 2021 | SXI | S 10b5-1 | 3,000 | $85.00 | $255,000 | 38,637 Indirect | -7.21% | Disposed | 263.1% (price as of 2026-08-20) |
| Nov. 10, 2020 | SXI | S 10b5-1 | 5,000 | $78.00 | $390,000 | 41,637 Indirect | -10.72% | Disposed | 295.7% (price as of 2026-08-20) |
Showing latest 100 of 165 transactions
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Aug. 23, 2025 | SXI | Phantom Stock Units | Common Stock (2,890) | — | Aug. 23, 2028 | 2,890 | Acquired |
| Aug. 23, 2025 | SXI | Restricted Stock Units | Common Stock (6,228) | — | — | 6,228 | Acquired |
| Aug. 23, 2025 | SXI | Phantom Stock Units | Common Stock (9,343) | — | Aug. 23, 2028 | 9,343 | Acquired |
| Aug. 23, 2025 | SXI | Phantom Stock Units | Common Stock (8,127) | $0.00 | Aug. 23, 2025 | 8,127 | Disposed |
| Aug. 22, 2025 | SXI | Restricted Stock Units | Common Stock (2,299) | — | — | 2,299 | Disposed |
| Aug. 22, 2025 | SXI | Phantom Stock Units | Common Stock (8,803) | $0.00 | Aug. 23, 2025 | 8,803 | Disposed |
| Aug. 22, 2025 | SXI | Phantom Stock Units | Common Stock (10,627) | $63.59 | Aug. 23, 2025 | 10,627 | Disposed |
| Aug. 23, 2024 | SXI | Phantom Stock Units | Common Stock (2,835) | — | Aug. 23, 2027 | 2,835 | Acquired |
| Aug. 23, 2024 | SXI | Restricted Stock Units | Common Stock (6,899) | — | — | 6,899 | Acquired |
| Aug. 23, 2024 | SXI | Phantom Stock Units | Common Stock (10,349) | — | Aug. 23, 2027 | 10,349 | Acquired |
| Aug. 23, 2024 | SXI | Phantom Stock Units | Common Stock (14,283) | $0.00 | Aug. 23, 2024 | 14,283 | Disposed |
| Aug. 23, 2024 | SXI | Phantom Stock Units | Common Stock (10,858) | $71.18 | Aug. 23, 2024 | 10,858 | Disposed |
| Sept. 6, 2023 | SXI | Phantom Stock Units | Common Stock (27,709) | $58.81 | Sept. 6, 2023 | 27,709 | Disposed |
| Sept. 6, 2023 | SXI | Phantom Stock Units | Common Stock (7,773) | $43.16 | Sept. 6, 2023 | 7,773 | Disposed |
| Aug. 23, 2023 | SXI | Phantom Stock Units | Common Stock (4,441) | — | Aug. 23, 2026 | 4,441 | Acquired |
| Aug. 23, 2023 | SXI | Phantom Stock Units | Common Stock (10,601) | — | Aug. 23, 2026 | 10,601 | Acquired |
| Sept. 6, 2022 | SXI | Restricted Stock | Common Stock (18,163) | $0.00 | Sept. 6, 2022 | 18,163 | Disposed |
| Sept. 6, 2022 | SXI | Phantom Stock Units | Common Stock (4,657) | $51.56 | Sept. 6, 2022 | 4,657 | Disposed |
| Aug. 23, 2022 | SXI | Phantom Stock Units [F4] | Common Stock (10,627) | — | Aug. 23, 2025 | 10,627 | Acquired |
| Aug. 23, 2022 | SXI | Phantom Stock Units [F3] | Common Stock (16,930) | — | Aug. 23, 2025 | 16,930 | Acquired |
| Sept. 3, 2021 | SXI | Phantom Stock Units | Common Stock (4,670) | $76.65 | Sept. 6, 2021 | 4,670 | Disposed |
| Aug. 23, 2021 | SXI | Phantom Stock Units | Common Stock (10,858) | — | Aug. 23, 2024 | 10,858 | Acquired |
| Aug. 23, 2021 | SXI | Phantom Stock Units | Common Stock (14,283) | — | Aug. 23, 2024 | 14,283 | Acquired |
| Sept. 6, 2020 | SXI | Phantom Stock Units [F5] | Common Stock (2,292) | $68.03 | Sept. 6, 2020 | 2,292 | Disposed |
| Sept. 6, 2020 | SXI | Phantom Stock Units [F4] | Common Stock (27,709) | $58.81 | Sept. 6, 2023 | 27,709 | Acquired |
| Sept. 6, 2020 | SXI | Phantom Stock Units [F7] | Common Stock (7,773) | $43.16 | Sept. 6, 2023 | 7,773 | Acquired |
| Sept. 6, 2019 | SXI | Phantom Stock Units [F4] | Common Stock (4,657) | $51.56 | Sept. 6, 2022 | 4,657 | Acquired |
| Sept. 6, 2019 | SXI | Restricted Stock [F3] | Common Stock (18,163) | $0.00 | Sept. 6, 2022 | 18,163 | Acquired |
| Sept. 6, 2019 | SXI | Phantom Stock Units | Common Stock (4,604) | $61.97 | Sept. 6, 2019 | 4,604 | Disposed |
| Sept. 9, 2018 | SXI | Phantom Stock Units | Common Stock (3,391) | $58.35 | Sept. 9, 2018 | 3,391 | Disposed |
| Sept. 6, 2018 | SXI | Phantom Stock Units | Common Stock (4,670) | $76.65 | Sept. 6, 2021 | 4,670 | Acquired |
| Sept. 9, 2017 | SXI | Phantom Stock Units | Common Stock (4,360) | $55.76 | Sept. 9, 2017 | 4,360 | Disposed |
| Sept. 6, 2016 | SXI | Phantom Stock Units | Common Stock (4,604) | $61.97 | Sept. 6, 2019 | 4,604 | Acquired |
| Sept. 9, 2015 | SXI | Phantom Stock Units | Common Stock (3,391) | $58.35 | Sept. 9, 2018 | 3,391 | Acquired |
| Sept. 9, 2014 | SXI | Phantom Stock Units | Common Stock (4,360) | $55.76 | Sept. 9, 2017 | 4,360 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Jan. 21, 2014 | SXI | Common Stock | 0 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
SXI
President and CEO| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $936,436 | — | $3,553,548 | — | $339,224 | $154,001 | $134,073 | $5,117,281 |
| 2024 | $927,432 | — | $3,318,267 | — | $342,665 | $259,577 | $145,544 | $4,993,485 |
| 2023 | $892,597 | — | $3,405,266 | — | $471,302 | $164,579 | $164,853 | $5,098,597 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.