Elizabeth A Porter
CIK 1820381 · View on SEC EDGAR ↗
Insider
First SEC filing: Aug. 6, 2020 · Latest: Aug. 6, 2020
On this page
Insider at
Insider transactions
0 buys (P)
5 sells (S)
Net:
$-1,437,308
+ 12 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
12 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| April 7, 2026 | LDOS | S 10b5-1 | 1,915 | $158.75 | $304,006 | 49,561 Direct | -3.72% | Disposed | -8.7% (price as of 2026-08-20) |
| April 7, 2026 | LDOS | S 10b5-1 | 85 | $159.32 | $13,542 | 49,476 Direct | -0.17% | Disposed | -9.0% (price as of 2026-08-20) |
| Jan. 20, 2026 | LDOS | S 10b5-1 | 3,000 | $192.21 | $576,630 | 38,575 Direct | -7.22% | Disposed | -24.6% (price as of 2026-08-20) |
| Dec. 19, 2025 | LDOS | S 10b5-1 | 2,303 | $180.89 | $416,590 | 42,272 Direct | -5.17% | Disposed | -19.8% (price as of 2026-08-20) |
| Dec. 19, 2025 | LDOS | S 10b5-1 | 697 | $181.55 | $126,540 | 41,575 Direct | -1.65% | Disposed | -20.1% (price as of 2026-08-20) |
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 |
|---|---|---|---|---|---|---|---|
| Feb. 23, 2026 | LDOS | Stock Option (Right to Buy) | Common Stock (3,240) | $62.43 | March 7, 2026 | 3,240 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Aug. 6, 2020 | LDOS | Common Stock | 8,335 | Direct |
| Aug. 6, 2020 | LDOS | Stock Option (Right to Buy)→ Common Stock (3,268) | 3,268 | Direct |
| Aug. 6, 2020 | LDOS | Stock Option (Right to Buy)→ Common Stock (2,524) | 2,524 | Direct |
| Aug. 6, 2020 | LDOS | Stock Option (Right to Buy)→ Common Stock (3,240) | 3,240 | Direct |
| Aug. 6, 2020 | LDOS | Stock Option (Right to Buy)→ Common Stock (1,880) | 1,880 | Direct |