William R. Langton
Insider
First SEC filing: Feb. 23, 2012 · Latest: Feb. 23, 2012
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Oct. 2, 2012 | PRLB | M 10b5-1 | 8,250 | · | · | 201,750 Direct | -3.93% | Disposed | (price as of 2026-10-06) |
| Oct. 2, 2012 | PRLB | S 10b5-1 | 8,250 | $34.00 | $280,500 | 0 Direct | -100.00% | Disposed | 186.1% (price as of 2026-10-06) |
| Oct. 2, 2012 | PRLB | M 10b5-1 | 8,250 | $2.66 | $21,945 | 8,250 Direct | · | Acquired | 3557.1% (price as of 2026-10-06) |
| May 7, 2012 | PRLB | A | 8,480 | · | · | 8,480 Direct | · | Acquired | (price as of 2026-10-06) |
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 |
|---|---|---|---|---|---|---|---|
| Oct. 2, 2012 | PRLB | Employee Stock Option (right to buy) | Common Stock | $2.66 | Sept. 11, 2016 | 8,250 | Disposed |
| May 7, 2012 | PRLB | Employee Stock Option (right to buy) | Common Stock | $30.58 | May 7, 2022 | 8,480 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 3 holdings
Securities held when first becoming an insider, per SEC Form 3.