Company · CIK 0001120914 · SIC 7372 — Services-Prepackaged Software · Nasdaq

PDF SOLUTIONS INC · PDFS

Insider activity reported against this company. All insider holders · On EDGAR ↗

Period1M 3M 6M 1Y 2Y All datashares as filed — not split-adjusted

Open-market buys & salesbuys $87k · 1sales $9.3M · 21net −$9.2M

Reported at this company — common stock

Trade	Reported (ET)	Insider	Shares	Avg price	Total	Owned after	Δ stake	Flags
Aug 31, 2026 SForm 4 →	Sep 1, 2:09 pm EDT	Andrzej StrojwasChief Technology Officer	3,394	$44.41	$150,728	90,965	−3.60%
Aug 12, 2026 SForm 4 →	Aug 12, 9:32 pm EDT	Shuo ZhangDirector	1,501	$51.47	$77,256	23,380	−6.03%
Jul 1, 2026 AFForm 4 →	Jul 2, 4:46 pm EDT	Andrzej StrojwasChief Technology Officer	6,716	$66.88	$90,689	94,203	—
Jul 1, 2026 AForm 4 →	Jul 2, 4:44 pm EDT	Shuo ZhangDirector	2,689	—	—	24,881	—
Jul 1, 2026 AForm 4 →	Jul 2, 4:42 pm EDT	Michael B GustafsonDirector	2,689	—	—	40,192	—
Jul 1, 2026 AForm 4 →	Jul 2, 4:40 pm EDT	Chi-Foon ChanDirector	2,689	—	—	24,168	—
Jul 1, 2026 AForm 4 →	Jul 2, 4:35 pm EDT	Joseph R BronsonDirector	2,689	—	—	40,956	—
Jul 1, 2026 AForm 4 →	Jul 2, 4:33 pm EDT	Ye Jane LiDirector	2,689	—	—	26,632	—
Jul 1, 2026 AForm 4 →	Jul 2, 4:29 pm EDT	Nancy ErbaDirector	2,689	—	—	11,943	—
Jul 1, 2026 AFForm 4 →	Jul 2, 4:13 pm EDT	Adnan RazaEVP, Finance and CFO	29,460	$66.88	$401,949	80,697	—
Dec 1, 2018 FForm 4 →	Dec 4, 7:16 pm EST	Kimon MichaelsVP of Products and Solutions, Director	38	$9.25	$352	89,175	—	plan?
Nov 1, 2018 AForm 4 →	Nov 2, 7:52 pm EDT	Michael B GustafsonDirector	20,228	—	—	20,228	—	plan?
Nov 1, 2018 AForm 4 →	Nov 2, 7:49 pm EDT	Joseph R BronsonDirector	4,688	—	—	29,326	—	plan?
Nov 1, 2018 AForm 4 →	Nov 2, 7:47 pm EDT	Marco IansitiDirector	4,688	—	—	18,189	—	plan?
Aug 1, 2018 AForm 4 →	Aug 3, 2:00 pm EDT	Gerald Zheyao YinDirector	10,325	—	—	10,325	—	plan?
Jul 1, 2018 FForm 4 →	Jul 2, 7:16 pm EDT	Gregory C WalkerCFO, VP Finance	407	$11.98	$4,876	21,468	—	plan?
Jun 1, 2018 FForm 4 →	Jul 2, 7:26 pm EDT	Cornelis HartgringVice President, CSS	758	$11.98	$9,081	46,082	—	plan? late
Jun 1, 2018 FForm 4 →	Jun 5, 8:30 pm EDT	Gregory C WalkerCFO, VP Finance	1,330	$13.07	$17,383	21,875	—	plan?
Jun 1, 2018 FForm 4 →	Jun 5, 8:25 pm EDT	Kimon MichaelsVP of Products and Solutions, Director	38	$13.07	$497	89,213	—	plan?
Jun 1, 2018 FForm 4 →	Jun 5, 8:20 pm EDT	Cornelis HartgringVice President, CSS	2,303	$13.07	$30,100	46,840	—	plan?
Jan 1, 2018 FForm 4 →	Jan 3, 9:36 am EST	Cornelis HartgringVice President, CSS	549	$15.70	$8,619	47,583	—	plan?
Jan 1, 2018 FForm 4 →	Jan 3, 9:30 am EST	Gregory C WalkerCFO, VP Finance	206	$15.70	$3,234	21,707	—	plan?
Dec 1, 2017 FForm 4 →	Dec 4, 4:07 pm EST	Gregory C WalkerCFO, VP Finance	659	$16.93	$11,157	21,913	—	plan?
Dec 1, 2017 FForm 4 →	Dec 4, 3:55 pm EST	Cornelis HartgringVice President, CSS	1,434	$16.93	$24,278	48,132	—	plan?
Dec 1, 2017 FForm 4 →	Dec 4, 3:51 pm EST	Kimon MichaelsVP of Products and Solutions, Director	41	$16.93	$694	89,251	—	plan?
Aug 18, 2017 SForm 4 →	Aug 21, 1:55 pm EDT	Lucio LanzaDirector	60,000	$15.00	$900,156	318,967	−15.8%	plan?
Jul 1, 2017 FForm 4 →	Jul 5, 3:47 pm EDT	Cornelis HartgringVice President, CSS	823	$16.45	$13,538	48,714	—	plan?
Jul 1, 2017 FForm 4 →	Jul 5, 3:46 pm EDT	Gregory C WalkerCFO, VP Finance	442	$16.45	$7,271	21,658	—	plan?
Jun 9, 2017 SForm 4 →	Jun 13, 6:56 pm EDT	Lucio LanzaDirector	45,000	$17.57	$790,592	378,967	−10.6%	plan?
Jun 9, 2017 MForm 4 →	Jun 13, 6:56 pm EDT	Lucio LanzaDirector	45,000	$4.82	$216,900	423,967	—	plan?
Jun 1, 2017 FForm 4 →	Jun 5, 2:47 pm EDT	Kimon MichaelsVP of Products and Solutions, Director	41	$16.50	$677	89,292	—	plan?
Jun 1, 2017 AForm 4 →	Jun 5, 2:33 pm EDT	Joseph R BronsonDirector	5,719	—	—	24,638	—	plan?
Jun 1, 2017 AForm 4 →	Jun 5, 2:11 pm EDT	Lucio LanzaDirector	13,344	—	—	378,967	—	plan?
Jun 1, 2017 AForm 4 →	Jun 5, 2:09 pm EDT	Marco IansitiDirector	5,719	—	—	13,501	—	plan?
Jun 1, 2017 AForm 4 →	Jun 5, 1:58 pm EDT	KwangH KimVP of Business Development	4,463	—	—	4,463	—	plan?
Jun 1, 2017 AFForm 4 →	Jun 5, 1:52 pm EDT	Gregory C WalkerCFO, VP Finance	7,437	$16.50	$31,746	22,100	—	plan?
Jun 1, 2017 AFForm 4 →	Jun 5, 1:43 pm EDT	Cornelis HartgringVice President, CSS	25,920	$16.50	$37,653	49,537	—	plan?
May 24, 2017 SForm 4 →	May 26, 3:56 pm EDT	Lucio LanzaDirector	30,000	$16.50	$495,096	320,623	−8.56%	plan?
May 24, 2017 MForm 4 →	May 26, 3:56 pm EDT	Lucio LanzaDirector	75,000	$5.52	$414,000	365,623	—	plan?
May 18, 2017 SForm 4 →	May 22, 2:16 pm EDT	Lucio LanzaDirector	15,000	$16.61	$249,174	320,623	−4.47%	plan?
May 18, 2017 MForm 4 →	May 22, 2:16 pm EDT	Lucio LanzaDirector	15,000	$10.43	$156,450	335,623	—	plan?
May 1, 2017 FForm 4 →	May 3, 9:34 pm EDT	Kimon MichaelsVP of Products and Solutions, Director	163	$17.58	$2,866	89,333	—	plan?
May 1, 2017 FForm 4 →	May 3, 9:32 pm EDT	Cornelis HartgringVice President, CSS	327	$17.58	$5,749	28,181	—	plan?
May 1, 2017 FForm 4 →	May 3, 8:43 pm EDT	Gregory C WalkerCFO, VP Finance	320	$17.58	$5,626	18,511	—	plan?
Feb 16, 2017 MSForm 4 →	Feb 21, 8:30 pm EST	Cornelis HartgringVice President, CSS	29,788	—	—	28,508	—	plan?
Jan 1, 2017 FForm 4 →	Jan 4, 8:11 pm EST	Cornelis HartgringVice President, CSS	548	$22.55	$12,357	35,025	—	plan?
Jan 1, 2017 FForm 4 →	Jan 4, 8:08 pm EST	Gregory C WalkerCFO, VP Finance	205	$22.55	$4,623	13,108	—	plan?
Dec 6, 2016 SForm 4 →	Dec 7, 8:08 pm EST	KwangH KimVP of Business Development	6,000	$21.91	$131,486	0	−100%	plan?
Dec 1, 2016 FForm 4 →	Dec 5, 7:52 pm EST	Kimon MichaelsVP of Products and Solutions, Director	41	$21.95	$900	89,496	—	plan?
Dec 1, 2016 FForm 4 →	Dec 5, 7:27 pm EST	Cornelis HartgringVice President, CSS	706	$21.95	$15,497	35,573	—	plan?
Dec 1, 2016 FForm 4 →	Dec 5, 7:16 pm EST	Gregory C WalkerCFO, VP Finance	659	$21.95	$14,465	13,313	—	plan?
Dec 1, 2016 SForm 4 →	Dec 5, 7:13 pm EST	KwangH KimVP of Business Development	6,000	$23.00	$138,015	6,000	−50.0%	plan?
Dec 1, 2016 AForm 4 →	Dec 5, 7:09 pm EST	Marco IansitiDirector	7,782	—	—	7,782	—	plan?
Nov 8, 2016 SForm 4/A →	Mar 13, 2017, 8:13 pm EDT	Lucio LanzaDirector	14,000	$19.89	$278,495	320,623	−4.18%	plan?
Nov 8, 2016 MForm 4/A →	Mar 13, 2017, 8:13 pm EDT	Lucio LanzaDirector	45,000	$5.40	$243,000	334,623	—	plan?
Nov 8, 2016 FMForm 4 →	Nov 9, 7:51 pm EST	Lucio LanzaDirector	59,000	$8.84	$521,495	320,623	—	plan? amended
Nov 8, 2016 SForm 4 →	Nov 9, 7:50 pm EST	Gregory C WalkerCFO, VP Finance	6,229	$19.85	$123,646	13,972	−30.8%	plan?
Nov 1, 2016 FForm 4 →	Nov 3, 3:14 pm EDT	Gregory C WalkerCFO, VP Finance	327	$19.32	$6,318	20,201	—	plan?
Nov 1, 2016 FForm 4 →	Nov 3, 2:58 pm EDT	Cornelis HartgringVice President, CSS	327	$19.32	$6,318	36,279	—	plan?
Nov 1, 2016 FForm 4 →	Nov 3, 2:53 pm EDT	Kimon MichaelsVP of Products and Solutions, Director	163	$19.32	$3,149	89,537	—	plan?
Sep 12, 2016 SForm 4 →	Sep 13, 3:42 pm EDT	Gregory C WalkerCFO, VP Finance	2,665	$15.90	$42,376	20,528	−11.5%	plan?
Aug 9, 2016 SForm 4 →	Aug 10, 5:24 pm EDT	Gregory C WalkerCFO, VP Finance	2,382	$17.00	$40,500	23,193	−9.31%	plan?
Aug 2, 2016 SForm 4 →	Aug 3, 8:44 pm EDT	Cornelis HartgringVice President, CSS	15,631	$16.66	$260,475	36,606	−29.9%	plan?
Jul 1, 2016 AForm 4 →	Jul 5, 6:54 pm EDT	Lucio LanzaDirector	12,031	—	—	289,623	—	plan?
Jul 1, 2016 AForm 4 →	Jul 5, 6:51 pm EDT	R Stephen HeinrichsDirector	5,156	—	—	29,968	—	plan?
Jul 1, 2016 AForm 4 →	Jul 5, 6:48 pm EDT	Joseph R BronsonDirector	5,156	—	—	18,919	—	plan?
Jul 1, 2016 AFForm 4 →	Jul 5, 6:46 pm EDT	Cornelis HartgringVice President, CSS	14,103	$14.14	$4,991	51,843	—	plan?
Jul 1, 2016 AFForm 4 →	Jul 5, 6:43 pm EDT	Gregory C WalkerCFO, VP Finance	6,828	$14.14	$3,747	25,100	—	plan?
Jun 1, 2016 FForm 4 →	Jun 3, 7:00 pm EDT	Gregory C WalkerCFO, VP Finance	1,412	$15.03	$21,222	18,802	—	plan?
Jun 1, 2016 FForm 4 →	Jun 3, 6:59 pm EDT	Kimon MichaelsVP of Products and Solutions, Director	41	$15.03	$616	89,700	—	plan?
Jun 1, 2016 FForm 4 →	Jun 3, 6:56 pm EDT	Cornelis HartgringVice President, CSS	1,496	$15.03	$22,485	38,446	—	plan?
May 28, 2016 FForm 4 →	Jun 1, 8:12 pm EDT	Gregory C WalkerCFO, VP Finance	638	$14.44	$9,213	20,214	—	plan?
May 28, 2016 FForm 4 →	Jun 1, 8:11 pm EDT	Cornelis HartgringVice President, CSS	638	$14.44	$9,213	39,942	—	plan?
May 27, 2016 PForm 4 →	Jun 1, 12:58 pm EDT	R Stephen HeinrichsDirector	6,118	$14.24	$87,095	19,431	+46.0%	plan?
May 1, 2016 FForm 4 →	May 2, 6:09 pm EDT	Cornelis HartgringVice President, CSS	381	$13.45	$5,124	40,915	—	plan?
May 1, 2016 FForm 4 →	May 2, 6:02 pm EDT	Gregory C WalkerCFO, VP Finance	346	$13.45	$4,654	20,852	—	plan?
May 1, 2016 FForm 4 →	May 2, 5:55 pm EDT	Kimon MichaelsVP of Products and Solutions, Director	163	$13.45	$2,192	90,015	—	plan?
Dec 1, 2015 FForm 4 →	Dec 2, 2:59 pm EST	Cornelis HartgringVice President, CSS	978	$11.22	$10,973	39,803	—	plan?
Dec 1, 2015 FForm 4 →	Dec 2, 2:59 pm EST	Kimon MichaelsVP of Products and Solutions, Director	41	$11.22	$460	90,178	—	plan?
Dec 1, 2015 FForm 4 →	Dec 2, 2:58 pm EST	Gregory C WalkerCFO, VP Finance	913	$11.22	$10,244	19,765	—	plan?
Nov 22, 2015 FForm 4 →	Nov 23, 6:43 pm EST	Kimon MichaelsVP of Products and Solutions, Director	274	$10.43	$2,858	90,219	—	plan?
Nov 22, 2015 FForm 4 →	Nov 23, 6:41 pm EST	Cornelis HartgringVice President, CSS	435	$10.43	$4,537	40,781	—	plan?
Nov 1, 2015 FForm 4 →	Nov 3, 5:45 pm EST	Gregory C WalkerCFO, VP Finance	454	$10.56	$4,794	20,678	—	plan?
Nov 1, 2015 FForm 4 →	Nov 3, 5:44 pm EST	Cornelis HartgringVice President, CSS	454	$10.56	$4,794	41,216	—	plan?
Nov 1, 2015 FForm 4 →	Nov 3, 5:44 pm EST	Kimon MichaelsVP of Products and Solutions, Director	163	$10.56	$1,721	90,493	—	plan?
Jun 11, 2015 SForm 4 →	Jun 15, 11:12 am EDT	R Stephen HeinrichsDirector	35,000	$16.48	$576,653	19,187	−64.6%	plan?
Jun 11, 2015 MForm 4 →	Jun 15, 11:12 am EDT	R Stephen HeinrichsDirector	35,000	$16.00	$560,000	48,280	—	plan?
Jun 1, 2015 AForm 4 →	Jun 2, 3:21 pm EDT	Kimon MichaelsVP of Products and Solutions, Director	736	—	—	90,656	—	plan?
Jun 1, 2015 AForm 4 →	Jun 2, 3:21 pm EDT	KwangH KimVP of Business Development	12,000	—	—	12,000	—	plan?
Jun 1, 2015 AForm 4 →	Jun 2, 3:21 pm EDT	R Stephen HeinrichsDirector	5,625	—	—	19,187	—	plan?
Jun 1, 2015 AForm 4 →	Jun 2, 3:21 pm EDT	Joseph R BronsonDirector	5,625	—	—	13,763	—	plan?
Jun 1, 2015 AForm 4 →	Jun 2, 3:21 pm EDT	Lucio LanzaDirector	13,125	—	—	277,592	—	plan?
Jun 1, 2015 AFForm 4 →	Jun 2, 3:20 pm EDT	Cornelis HartgringVice President, CSS	12,867	$16.48	$26,648	41,670	—	plan?
Jun 1, 2015 AFForm 4 →	Jun 2, 3:20 pm EDT	Gregory C WalkerCFO, VP Finance	11,302	$16.48	$25,577	21,132	—	plan?
May 28, 2015 FForm 4 →	May 29, 3:07 pm EDT	Gregory C WalkerCFO, VP Finance	908	$16.12	$14,637	12,934	—	plan?
May 27, 2015 FForm 4 →	May 29, 3:07 pm EDT	Kimon MichaelsVP of Products and Solutions, Director	138	$16.58	$2,288	89,920	—	plan?
May 27, 2015 FForm 4 →	May 29, 3:06 pm EDT	Cornelis HartgringVice President, CSS	1,349	$16.27	$21,949	32,037	—	plan?
May 22, 2015 FForm 4 →	May 23, 2016, 8:48 pm EDT	Kimon MichaelsVP of Products and Solutions, Director	274	$13.13	$3,598	89,741	—	plan? late
May 22, 2015 FForm 4 →	May 23, 2016, 8:44 pm EDT	Cornelis HartgringVice President, CSS	335	$13.13	$4,399	40,580	—	plan? late
May 22, 2015 FForm 4 →	May 26, 4:51 pm EDT	Cornelis HartgringVice President, CSS	872	$16.51	$14,397	33,386	—	plan?

Reported at this company — derivatives (options, RSUs, warrants)

Trade	Reported (ET)	Insider	Shares	Avg price	Total	Owned after	Δ stake
Jun 9, 2017 MForm 4 →	Jun 13, 6:56 pm EDT	Lucio LanzaDirector	45,000	$4.82	$216,900	0	—
May 24, 2017 MForm 4 →	May 26, 3:56 pm EDT	Lucio LanzaDirector	75,000	$5.52	$414,000	0	—
May 18, 2017 MForm 4 →	May 22, 2:16 pm EDT	Lucio LanzaDirector	15,000	$10.43	$156,450	0	—
Feb 16, 2017 MForm 4 →	Feb 21, 8:30 pm EST	Cornelis HartgringVice President, CSS	10,855	$8.39	$91,060	0	—
Nov 8, 2016 MForm 4/A →	Mar 13, 2017, 8:13 pm EDT	Lucio LanzaDirector	45,000	$5.40	$243,000	0	—
Jun 11, 2015 MForm 4 →	Jun 15, 11:12 am EDT	R Stephen HeinrichsDirector	35,000	—	—	0	—
May 19, 2015 MForm 4 →	May 20, 1:07 pm EDT	Lucio LanzaDirector	50,000	—	—	0	—
Feb 23, 2015 MForm 4 →	Feb 25, 1:04 pm EST	Gregory C WalkerCFO, VP Finance	117,401	—	—	33,750	—
Feb 19, 2015 MForm 4 →	Feb 20, 5:49 pm EST	Gregory C WalkerCFO, VP Finance	21,349	—	—	151,151	—
Feb 12, 2015 MForm 4 →	Feb 17, 8:44 pm EST	Cornelis HartgringVice President, CSS	20,854	—	—	1,688	—
Feb 10, 2015 MForm 4 →	Feb 11, 9:56 pm EST	Cornelis HartgringVice President, CSS	100,000	—	—	2,500	—
Nov 8, 2013 MForm 4/A →	May 3, 2017, 8:38 pm EDT	Gregory C WalkerCFO, VP Finance	3,750	—	—	172,500	—
Nov 16, 2011 AForm 5 →	May 4, 2017, 2:55 pm EDT	Gregory C WalkerCFO, VP Finance	180,000	$6.09	$1,096,200	180,000	—