William M. Dietrick
Insider
First SEC filing: Feb. 23, 2012 · Latest: Feb. 14, 2013
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 |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 15, 2013 | PRLB | A | 12,130 | · | · | 12,130 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 16, 2013 | PRLB | M 10b5-1 | 12,000 | · | · | 23,000 Direct | -34.29% | Disposed | (price as of 2026-10-05) |
| Jan. 16, 2013 | PRLB | M 10b5-1 | 20,000 | · | · | 7,000 Direct | -74.07% | Disposed | (price as of 2026-10-05) |
| Jan. 16, 2013 | PRLB | S 10b5-1 | 32,000 | $42.30 | $1,353,600 | 1,250 Direct | -96.24% | Disposed | 133.3% (price as of 2026-10-05) |
| Jan. 16, 2013 | PRLB | M 10b5-1 | 12,000 | $7.86 | $94,320 | 33,250 Direct | +56.47% | Acquired | 1155.5% (price as of 2026-10-05) |
| Jan. 16, 2013 | PRLB | M 10b5-1 | 20,000 | $5.00 | $100,000 | 21,250 Direct | +1600.00% | Acquired | 1873.6% (price as of 2026-10-05) |
| Nov. 27, 2012 | PRLB | M 10b5-1 | 4,000 | · | · | 27,000 Direct | -12.90% | Disposed | (price as of 2026-10-05) |
| Nov. 27, 2012 | PRLB | S 10b5-1 | 4,000 | $36.00 | $144,000 | 0 Direct | -100.00% | Disposed | 174.1% (price as of 2026-10-05) |
| Nov. 27, 2012 | PRLB | M 10b5-1 | 4,000 | $5.00 | $20,000 | 4,000 Direct | · | Acquired | 1873.6% (price as of 2026-10-05) |
| Oct. 25, 2012 | PRLB | M 10b5-1 | 4,000 | · | · | 31,000 Direct | -11.43% | Disposed | (price as of 2026-10-05) |
| Oct. 25, 2012 | PRLB | S 10b5-1 | 4,000 | $36.00 | $144,000 | 0 Direct | -100.00% | Disposed | 174.1% (price as of 2026-10-05) |
| Oct. 25, 2012 | PRLB | M 10b5-1 | 4,000 | $5.00 | $20,000 | 4,000 Direct | · | Acquired | 1873.6% (price as of 2026-10-05) |
| May 7, 2012 | PRLB | A | 8,480 | · | · | 8,480 Direct | · | Acquired | (price as of 2026-10-05) |
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. 15, 2013 | PRLB | Employee Stock Option (Right to Buy) | Common Stock | $47.08 | Feb. 15, 2023 | 12,130 | Acquired |
| Jan. 16, 2013 | PRLB | Employee Stock Option (right to buy) | Common Stock | $7.86 | Dec. 21, 2020 | 12,000 | Disposed |
| Jan. 16, 2013 | PRLB | Employee Stock Option (right to buy) | Common Stock | $5.00 | May 12, 2018 | 20,000 | Disposed |
| Nov. 27, 2012 | PRLB | Employee Stock Option (right to buy) | Common Stock | $5.00 | May 12, 2018 | 4,000 | Disposed |
| Oct. 25, 2012 | PRLB | Employee Stock Option (right to buy) | Common Stock | $5.00 | May 12, 2018 | 4,000 | 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.