Arbo · 13F Signal Engine

Insider

Form 4/4-A open-market insider transactions (officers, directors, 10% owners) · 198 transactions

Table I (non-derivative) transactions only -- common stock bought, sold, awarded, exercised, or tax-withheld. Covers this app's full ticker Universe (backfilled INSIDER_LOOKBACK_QUARTERS quarters back, continuously monitored) plus whatever the market-wide discovery has found beyond it. Informational only: never summed into the core flow ranking.

Ticker	Insider	Role	Type	Date	Shares	Price	Value	Notes	Filing
NDAQ	SKULE JEREMY	EVP, CSO	Sale 10b5-1	2026-09-10	1,125	$94.22	$105,998	Disposed (101,198 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Sale	2026-08-10	3,226	$96.16	$310,212	Disposed (201,775 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Sale 10b5-1	2026-08-10	2,250	$94.75	$213,188	Disposed (102,323 owned after)	EDGAR
NDAQ	Peterson Bradley J	EVP, CIO	Sale	2026-08-07	6,000	$95.55	$573,300	Disposed (122,293 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Sale 10b5-1	2026-08-03	1,556	$95.07	$147,929	Disposed (67,647 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Sale	2026-07-29	11,010	$96.35	$1,060,814	Disposed (205,001 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Sale	2026-07-27	11,010	$93.96	$1,034,500	Disposed (216,011 owned after)	EDGAR
NDAQ	Peterson Bradley J	EVP, CIO	Sale	2026-07-24	13,000	$92.61	$1,203,930	Disposed (128,293 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Sale	2026-07-24	6,777	$92.53	$627,076	Disposed (227,021 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Sale 10b5-1	2026-07-01	3,000	$80.00	$240,000	Disposed (69,203 owned after)	EDGAR
NDAQ	Kazim Essa	Director	Tax withholding	2026-06-11	622	$86.72	$53,940	Disposed (146,917 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Sale 10b5-1	2026-06-11	3,000	$86.91	$260,730	Disposed (71,944 owned after)	EDGAR
NDAQ	INVESTOR AB	10% owner	Purchase	2026-06-11	56,782	$85.98	$4,882,116	Acquired (58,439,208 owned after)	EDGAR
NDAQ	Torgeby Johan	Director	Tax withholding	2026-06-11	300	$86.72	$26,016	Disposed (43,495 owned after)	EDGAR
NDAQ	BEGLEY CHARLENE T	Director	Award	2026-06-10	2,998	—	—	Acquired (48,999 owned after)	EDGAR
NDAQ	ARNOLDI MELISSA	Director	Award	2026-06-10	4,324	—	—	Acquired (55,515 owned after)	EDGAR
NDAQ	YABUKI JEFFERY W	Director	Award	2026-06-10	4,612	—	—	Acquired (22,959 owned after)	EDGAR
NDAQ	ZOLLAR ALFRED W	Director	Award	2026-06-10	4,497	—	—	Acquired (58,281 owned after)	EDGAR
NDAQ	Torgeby Johan	Director	Award	2026-06-10	2,998	—	—	Acquired (43,795 owned after)	EDGAR
NDAQ	Townes-Whitley Toni	Director	Award	2026-06-10	2,998	—	—	Acquired (23,469 owned after)	EDGAR
NDAQ	Kazim Essa	Director	Award	2026-06-10	4,151	—	—	Acquired (147,539 owned after)	EDGAR
NDAQ	Koch Kathryn A.	Director	Award	2026-06-10	3,171	—	—	Acquired (10,743 owned after)	EDGAR
NDAQ	SPLINTER MICHAEL R	Director	Award	2026-06-10	5,246	—	—	Acquired (217,988 owned after)	EDGAR
NDAQ	SPAHT PAUL HOLDEN JR.	Director	Award	2026-06-10	2,998	—	—	Acquired (13,399 owned after)	EDGAR
NDAQ	KLOET THOMAS A	Director	Award	2026-06-10	4,554	—	—	Acquired (36,559 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Sale	2026-05-18	5,093	$92.62	$471,714	Disposed (233,798 owned after)	EDGAR
NDAQ	Peterson Bradley J	EVP, CIO	Sale	2026-04-28	7,710	$90.82	$700,222	Disposed (141,035 owned after)	EDGAR
NDAQ	Tal Cohen	Pres. Market Platforms	Sale	2026-04-27	15,518	$90.75	$1,408,258	Disposed (215,208 owned after)	EDGAR
NDAQ	Daly Michelle Lynn	SVP, Controller & PAO	Sale	2026-04-24	129	$88.85	$11,462	Disposed (10,089 owned after)	EDGAR
NDAQ	Daly Michelle Lynn	SVP, Controller & PAO	Sale	2026-04-24	1,194	$88.82	$106,051	Disposed (10,218 owned after)	EDGAR
NDAQ	Peterson Bradley J	EVP, CIO	Tax withholding	2026-04-03	1,499	$86.65	$129,888	Disposed (148,745 owned after)	EDGAR
NDAQ	Zecca John	EVP, Global CLO	Tax withholding	2026-04-03	780	$86.65	$67,587	Disposed (153,334 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Tax withholding	2026-04-03	8,075	$86.65	$699,699	Disposed (1,983,866 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Tax withholding	2026-04-03	1,565	$86.65	$135,607	Disposed (238,891 owned after)	EDGAR
NDAQ	Daly Michelle Lynn	SVP, Controller & PAO	Tax withholding	2026-04-03	424	$86.65	$36,740	Disposed (11,412 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Tax withholding	2026-04-03	813	$86.65	$70,446	Disposed (74,944 owned after)	EDGAR
NDAQ	Tal Cohen	Pres. Market Platforms	Tax withholding	2026-04-03	1,565	$86.65	$135,607	Disposed (230,726 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Tax withholding	2026-04-03	1,017	$86.65	$88,123	Disposed (104,573 owned after)	EDGAR
NDAQ	Zecca John	EVP, Global CLO	Award	2026-04-01	7,339	—	—	Acquired (156,211 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Award	2026-04-01	7,046	—	—	Acquired (77,906 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Tax withholding	2026-04-01	2,149	$84.89	$182,429	Disposed (75,757 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Award	2026-04-01	11,743	—	—	Acquired (243,764 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Tax withholding	2026-04-01	3,308	$84.89	$280,816	Disposed (240,456 owned after)	EDGAR
NDAQ	Daly Michelle Lynn	SVP, Controller & PAO	Award	2026-04-01	2,025	—	—	Acquired (12,668 owned after)	EDGAR
NDAQ	Daly Michelle Lynn	SVP, Controller & PAO	Tax withholding	2026-04-01	832	$84.89	$70,628	Disposed (11,836 owned after)	EDGAR
NDAQ	Zecca John	EVP, Global CLO	Tax withholding	2026-04-01	2,097	$84.89	$178,014	Disposed (154,114 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Option exercise 10b5-1	2026-04-01	113,611	$22.22	$2,524,436	Acquired (2,079,362 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Sale 10b5-1	2026-04-01	113,611	$85.44	$9,706,924	Disposed (1,965,751 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Award 10b5-1	2026-04-01	39,929	—	—	Acquired (2,005,680 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Tax withholding 10b5-1	2026-04-01	13,739	$84.89	$1,166,304	Disposed (1,991,941 owned after)	EDGAR
NDAQ	Peterson Bradley J	EVP, CIO	Award	2026-04-01	8,103	—	—	Acquired (153,005 owned after)	EDGAR
NDAQ	Peterson Bradley J	EVP, CIO	Tax withholding	2026-04-01	2,761	$84.89	$234,381	Disposed (150,244 owned after)	EDGAR
NDAQ	Tal Cohen	Pres. Market Platforms	Award	2026-04-01	15,267	—	—	Acquired (243,432 owned after)	EDGAR
NDAQ	Tal Cohen	Pres. Market Platforms	Tax withholding	2026-04-01	11,141	$84.89	$945,759	Disposed (232,291 owned after)	EDGAR
NDAQ	Youngwood Sarah	EVP & CFO	Award	2026-04-01	15,267	—	—	Acquired (74,558 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Award	2026-04-01	7,633	—	—	Acquired (107,922 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Tax withholding	2026-04-01	2,332	$84.89	$197,963	Disposed (105,590 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Gift	2026-03-11	56,786	—	—	Disposed (2,022,537 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Sale 10b5-1	2026-03-06	92,840	$90.08	$8,363,027	Disposed (2,079,323 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Option exercise 10b5-1	2026-03-06	92,840	$22.22	$2,062,905	Acquired (2,172,163 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Sale 10b5-1	2026-03-02	6,000	$87.24	$523,440	Disposed (70,860 owned after)	EDGAR
NDAQ	Daly Michelle Lynn	SVP, Controller & PAO	Sale	2026-02-19	4,339	$81.34	$352,934	Disposed (10,643 owned after)	EDGAR
NDAQ	Torgeby Johan	Director	Purchase	2026-02-17	12,000	$79.86	$958,320	Acquired (40,797 owned after)	EDGAR
NDAQ	INVESTOR AB	10% owner	Purchase	2026-02-13	200,000	$79.18	$15,835,040	Acquired (58,382,426 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Award	2026-02-12	228,455	—	—	Acquired (2,153,358 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Award	2026-02-12	41,740	—	—	Acquired (2,079,323 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Tax withholding	2026-02-12	115,775	$80.42	$9,310,626	Disposed (2,037,583 owned after)	EDGAR
NDAQ	Peterson Bradley J	EVP, CIO	Tax withholding	2026-02-11	19,740	$82.51	$1,628,747	Disposed (135,227 owned after)	EDGAR
NDAQ	Peterson Bradley J	EVP, CIO	Award	2026-02-11	43,932	—	—	Acquired (154,967 owned after)	EDGAR
NDAQ	Zecca John	EVP, Global CLO	Award	2026-02-11	8,026	—	—	Acquired (148,872 owned after)	EDGAR
NDAQ	Zecca John	EVP, Global CLO	Tax withholding	2026-02-11	9,430	$82.51	$778,069	Disposed (140,846 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Award	2026-02-11	43,932	—	—	Acquired (239,853 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Tax withholding	2026-02-11	20,674	$82.51	$1,705,812	Disposed (219,179 owned after)	EDGAR
NDAQ	Tal Cohen	Pres. Market Platforms	Award	2026-02-11	43,932	—	—	Acquired (235,674 owned after)	EDGAR
NDAQ	Tal Cohen	Pres. Market Platforms	Award	2026-02-11	12,842	—	—	Acquired (228,165 owned after)	EDGAR
NDAQ	Tal Cohen	Pres. Market Platforms	Tax withholding	2026-02-11	20,674	$82.51	$1,705,812	Disposed (215,000 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Award	2026-02-11	12,842	—	—	Acquired (232,021 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Tax withholding	2026-02-11	9,924	$82.51	$818,829	Disposed (68,834 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Award	2026-02-11	21,088	—	—	Acquired (78,758 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Award	2026-02-11	26,359	—	—	Acquired (105,101 owned after)	EDGAR
NDAQ	Daly Michelle Lynn	SVP, Controller & PAO	Award	2026-02-11	6,919	—	—	Acquired (15,798 owned after)	EDGAR
NDAQ	Daly Michelle Lynn	SVP, Controller & PAO	Tax withholding	2026-02-11	2,580	$82.51	$212,876	Disposed (13,218 owned after)	EDGAR
NDAQ	Daly Michelle Lynn	SVP, Controller & PAO	Award	2026-02-11	1,764	—	—	Acquired (14,982 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Award	2026-02-11	8,026	—	—	Acquired (100,289 owned after)	EDGAR
NDAQ	Zecca John	EVP, Global CLO	Award	2026-02-11	24,602	—	—	Acquired (150,276 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Award	2026-02-11	8,026	—	—	Acquired (76,860 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Tax withholding	2026-02-11	12,838	$82.51	$1,059,263	Disposed (92,263 owned after)	EDGAR
NDAQ	Peterson Bradley J	EVP, CIO	Award	2026-02-11	9,632	—	—	Acquired (144,902 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Option exercise 10b5-1	2026-02-02	300,000	$22.22	$6,666,000	Acquired (2,224,903 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Sale 10b5-1	2026-02-02	300,000	$96.91	$29,073,000	Disposed (1,924,903 owned after)	EDGAR
NDAQ	SPLINTER MICHAEL R	Director	Gift	2026-01-30	4,680	—	—	Disposed (212,742 owned after)	EDGAR
NDAQ	Zecca John	EVP, Global CLO	Sale 10b5-1	2026-01-06	4,500	$100.01	$450,045	Disposed (125,674 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Option exercise 10b5-1	2026-01-02	300,000	$22.22	$6,666,000	Acquired (2,224,903 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Sale 10b5-1	2026-01-02	300,000	$96.39	$28,917,000	Disposed (1,924,903 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Tax withholding	2025-12-06	4,127	$90.22	$372,338	Disposed (78,742 owned after)	EDGAR
NDAQ	Youngwood Sarah	EVP & CFO	Tax withholding	2025-12-06	16,506	$90.22	$1,489,171	Disposed (59,291 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Sale 10b5-1	2025-12-01	2,105	$90.57	$190,650	Disposed (82,869 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Sale 10b5-1	2025-12-01	4,633	$90.57	$419,611	Disposed (57,670 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Sale 10b5-1	2025-11-03	2,105	$85.40	$179,767	Disposed (84,974 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Tax withholding 10b5-1	2025-10-01	1,262	$88.45	$111,624	Disposed (87,079 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Sale 10b5-1	2025-10-01	2,105	$88.22	$185,703	Disposed (88,341 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Sale 10b5-1	2025-09-02	2,105	$93.22	$196,228	Disposed (90,446 owned after)	EDGAR
NDAQ	BEGLEY CHARLENE T	Director	Sale	2025-08-04	3,000	$96.60	$289,800	Disposed (46,001 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Sale 10b5-1	2025-08-01	2,105	$95.49	$201,006	Disposed (92,551 owned after)	EDGAR
NDAQ	Daly Michelle Lynn	SVP, Controller & PAO	Sale	2025-07-25	8,691	$93.45	$812,174	Disposed (8,879 owned after)	EDGAR
NDAQ	Peterson Bradley J	EVP, CIO	Sale 10b5-1	2025-07-02	11,508	$88.87	$1,022,716	Disposed (111,035 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Tax withholding	2025-07-01	11,484	$89.42	$1,026,899	Disposed (195,921 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Sale 10b5-1	2025-07-01	2,105	$89.17	$187,703	Disposed (94,656 owned after)	EDGAR
NDAQ	Peterson Bradley J	EVP, CIO	Tax withholding 10b5-1	2025-07-01	10,986	$89.42	$982,368	Disposed (122,543 owned after)	EDGAR
NDAQ	Kazim Essa	Director	Award	2025-06-11	4,146	—	—	Acquired (144,209 owned after)	EDGAR
NDAQ	Townes-Whitley Toni	Director	Award	2025-06-11	2,995	—	—	Acquired (20,471 owned after)	EDGAR
NDAQ	ARNOLDI MELISSA	Director	Award	2025-06-11	4,319	—	—	Acquired (51,191 owned after)	EDGAR
NDAQ	SPLINTER MICHAEL R	Director	Award	2025-06-11	5,241	—	—	Acquired (217,422 owned after)	EDGAR
NDAQ	Torgeby Johan	Director	Tax withholding	2025-06-11	407	$86.07	$35,030	Disposed (28,797 owned after)	EDGAR
NDAQ	Torgeby Johan	Director	Award	2025-06-11	2,995	—	—	Acquired (29,204 owned after)	EDGAR
NDAQ	YABUKI JEFFERY W	Director	Award	2025-06-11	4,607	—	—	Acquired (18,347 owned after)	EDGAR
NDAQ	Kazim Essa	Director	Tax withholding	2025-06-11	821	$86.07	$70,663	Disposed (143,388 owned after)	EDGAR
NDAQ	KLOET THOMAS A	Director	Award	2025-06-11	4,549	—	—	Acquired (32,005 owned after)	EDGAR
NDAQ	SPAHT PAUL HOLDEN JR.	Director	Award	2025-06-11	2,995	—	—	Acquired (10,401 owned after)	EDGAR
NDAQ	BEGLEY CHARLENE T	Director	Award	2025-06-11	2,995	—	—	Acquired (49,001 owned after)	EDGAR
NDAQ	ZOLLAR ALFRED W	Director	Award	2025-06-11	4,491	—	—	Acquired (53,784 owned after)	EDGAR
NDAQ	Koch Kathryn A.	Director	Award	2025-06-11	3,167	—	—	Acquired (7,572 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Sale 10b5-1	2025-06-06	2,104	$85.00	$178,840	Disposed (96,438 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Sale	2025-06-06	4,000	$85.22	$340,880	Disposed (207,405 owned after)	EDGAR
NDAQ	SPAHT PAUL HOLDEN JR.	Director	Gift	2025-06-04	447,240	—	—	Disposed (7,406 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Sale 10b5-1	2025-06-02	1,053	$83.28	$87,694	Disposed (98,542 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Sale	2025-05-27	5,000	$83.27	$416,350	Disposed (211,405 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Sale	2025-05-27	3,000	$82.63	$247,890	Disposed (216,405 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Sale 10b5-1	2025-05-12	1,053	$81.52	$85,841	Disposed (99,595 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Sale 10b5-1	2025-04-04	657	$71.81	$47,179	Disposed (61,980 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Tax withholding 10b5-1	2025-04-03	813	$78.30	$63,658	Disposed (62,637 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Tax withholding	2025-04-03	1,564	$78.30	$122,461	Disposed (219,405 owned after)	EDGAR
NDAQ	Peterson Bradley J	EVP, CIO	Tax withholding	2025-04-03	1,497	$78.30	$117,215	Disposed (133,275 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Tax withholding	2025-04-03	8,057	$78.30	$630,863	Disposed (1,924,903 owned after)	EDGAR
NDAQ	Daly Michelle Lynn	SVP, Controller & PAO	Tax withholding	2025-04-03	424	$78.30	$33,199	Disposed (17,247 owned after)	EDGAR
NDAQ	Zecca John	EVP, Global CLO	Tax withholding	2025-04-03	779	$78.30	$60,996	Disposed (130,174 owned after)	EDGAR
NDAQ	Tal Cohen	Pres. Market Platforms	Tax withholding	2025-04-03	1,564	$78.30	$122,461	Disposed (191,742 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Tax withholding	2025-04-03	1,017	$78.30	$79,631	Disposed (100,648 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Sale 10b5-1	2025-04-02	1,132	$75.67	$85,658	Disposed (63,450 owned after)	EDGAR
NDAQ	Peterson Bradley J	EVP, CIO	Sale 10b5-1	2025-04-02	2,308	$75.67	$174,646	Disposed (134,772 owned after)	EDGAR
NDAQ	Peterson Bradley J	EVP, CIO	Award 10b5-1	2025-04-01	8,416	—	—	Acquired (139,491 owned after)	EDGAR
NDAQ	Daly Michelle Lynn	SVP, Controller & PAO	Tax withholding	2025-04-01	380	$75.86	$28,827	Disposed (17,671 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Award	2025-04-01	39,452	—	—	Acquired (1,946,429 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Tax withholding	2025-04-01	13,469	$75.86	$1,021,758	Disposed (1,932,960 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Award	2025-04-01	11,835	—	—	Acquired (223,175 owned after)	EDGAR
NDAQ	Griggs PC Nelson	Pres. Capital Access Platforms	Tax withholding	2025-04-01	2,206	$75.86	$167,347	Disposed (220,969 owned after)	EDGAR
NDAQ	Youngwood Sarah	EVP & CFO	Award	2025-04-01	15,781	—	—	Disposed (75,475 owned after)	EDGAR
NDAQ	Tal Cohen	Pres. Market Platforms	Tax withholding	2025-04-01	11,961	$75.86	$907,361	Disposed (193,306 owned after)	EDGAR
NDAQ	Tal Cohen	Pres. Market Platforms	Award	2025-04-01	46,028	—	—	Acquired (205,267 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Tax withholding 10b5-1	2025-04-01	1,403	$75.86	$106,432	Disposed (64,582 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Award 10b5-1	2025-04-01	7,233	—	—	Acquired (65,985 owned after)	EDGAR
NDAQ	Smith Bryan Everard	EVP, CPO	Sale 10b5-1	2025-04-01	2,000	$75.71	$151,420	Disposed (58,752 owned after)	EDGAR
NDAQ	Tal Cohen	Pres. Market Platforms	Award	2025-04-01	15,781	—	—	Acquired (159,239 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Tax withholding	2025-04-01	1,770	$75.86	$134,272	Disposed (101,665 owned after)	EDGAR
NDAQ	SKULE JEREMY	EVP, CSO	Award	2025-04-01	6,575	—	—	Acquired (103,435 owned after)	EDGAR
NDAQ	Daly Michelle Lynn	SVP, Controller & PAO	Award	2025-04-01	2,169	—	—	Acquired (18,051 owned after)	EDGAR
NDAQ	Zecca John	EVP, Global CLO	Tax withholding	2025-04-01	1,274	$75.86	$96,646	Disposed (130,953 owned after)	EDGAR
NDAQ	Peterson Bradley J	EVP, CIO	Tax withholding 10b5-1	2025-04-01	2,411	$75.86	$182,898	Disposed (137,080 owned after)	EDGAR
NDAQ	Zecca John	EVP, Global CLO	Award	2025-04-01	7,233	—	—	Acquired (132,227 owned after)	EDGAR
NDAQ	Youngwood Sarah	Executive Vice President	Sale 10b5-1	2025-03-17	14,959	$73.68	$1,102,179	Disposed (59,694 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Award	2025-03-12	168,125	—	—	Acquired (1,991,988 owned after)	EDGAR
NDAQ	FRIEDMAN ADENA T	Chair and CEO	Tax withholding	2025-03-12	85,011	$72.29	$6,145,445	Disposed (1,906,977 owned after)	EDGAR
NDAQ	Smith Bryan Everard	Executive Vice President	Sale 10b5-1	2025-03-03	3,500	$82.78	$289,730	Disposed (60,752 owned after)	EDGAR
NDAQ	Peterson Bradley J	Executive Vice President	Sale 10b5-1	2025-02-26	17,056	$79.79	$1,360,898	Disposed (131,075 owned after)	EDGAR
NDAQ	Peterson Bradley J	Executive Vice President	Tax withholding	2025-02-19	10,964	$81.24	$890,715	Disposed (148,131 owned after)	EDGAR
NDAQ	Tal Cohen	President, Market Platforms	Award	2025-02-19	28,020	—	—	Acquired (155,960 owned after)	EDGAR
NDAQ	Tal Cohen	President, Market Platforms	Tax withholding	2025-02-19	12,502	$81.24	$1,015,662	Disposed (143,458 owned after)	EDGAR
NDAQ	Griggs PC Nelson	President, Capital Access Plat	Tax withholding	2025-02-19	12,501	$81.24	$1,015,581	Disposed (211,340 owned after)	EDGAR
NDAQ	Griggs PC Nelson	President, Capital Access Plat	Award	2025-02-19	28,020	—	—	Acquired (223,841 owned after)	EDGAR
NDAQ	SKULE JEREMY	Executive Vice President	Award	2025-02-19	19,613	—	—	Acquired (105,918 owned after)	EDGAR
NDAQ	SKULE JEREMY	Executive Vice President	Tax withholding	2025-02-19	9,058	$81.24	$735,872	Disposed (96,860 owned after)	EDGAR
NDAQ	Smith Bryan Everard	Executive Vice President	Tax withholding	2025-02-19	6,734	$81.24	$547,070	Disposed (64,252 owned after)	EDGAR
NDAQ	Daly Michelle Lynn	Controller and Prin Acctg Ofcr	Award	2025-02-19	5,514	—	—	Acquired (17,937 owned after)	EDGAR
NDAQ	Daly Michelle Lynn	Controller and Prin Acctg Ofcr	Tax withholding	2025-02-19	2,056	$81.24	$167,029	Disposed (15,882 owned after)	EDGAR
NDAQ	Smith Bryan Everard	Executive Vice President	Award	2025-02-19	15,410	—	—	Acquired (70,986 owned after)	EDGAR
NDAQ	Peterson Bradley J	Executive Vice President	Award	2025-02-19	28,020	—	—	Acquired (159,030 owned after)	EDGAR
NDAQ	Zecca John	Executive Vice President	Award	2025-02-19	18,211	—	—	Acquired (131,474 owned after)	EDGAR
NDAQ	Zecca John	Executive Vice President	Tax withholding	2025-02-19	6,480	$81.24	$526,435	Disposed (124,994 owned after)	EDGAR
NDAQ	Tal Cohen	President, Market Platforms	Sale	2025-02-06	8,955	$83.75	$749,981	Disposed (127,940 owned after)	EDGAR
NDAQ	Smith Bryan Everard	Executive Vice President	Sale 10b5-1	2025-02-03	3,500	$81.56	$285,460	Disposed (55,576 owned after)	EDGAR
NDAQ	YABUKI JEFFERY W	Director	Gift	2024-12-27	2,500	—	—	Disposed (13,740 owned after)	EDGAR
NDAQ	SKULE JEREMY	Executive Vice President	Sale 10b5-1	2024-12-09	6,037	$80.87	$488,212	Disposed (92,342 owned after)	EDGAR
NDAQ	Youngwood Sarah	Executive Vice President	Tax withholding	2024-12-06	14,888	$81.14	$1,208,012	Disposed (74,653 owned after)	EDGAR
NDAQ	SKULE JEREMY	Executive Vice President	Tax withholding 10b5-1	2024-12-06	4,126	$81.14	$334,784	Disposed (98,379 owned after)	EDGAR
NDAQ	SKULE JEREMY	Executive Vice President	Sale 10b5-1	2024-11-18	12,075	$78.75	$950,906	Disposed (102,505 owned after)	EDGAR
NDAQ	ZOLLAR ALFRED W	Director	Purchase	2024-11-13	2,542	$80.24	$203,970	Acquired (49,293 owned after)	EDGAR
NDAQ	Peterson Bradley J	Executive Vice President	Sale 10b5-1	2024-11-13	11,820	$79.58	$940,636	Disposed (131,010 owned after)	EDGAR
NDAQ	Griggs PC Nelson	President, Capital Access Plat	Sale	2024-11-11	5,000	$80.21	$401,050	Disposed (195,821 owned after)	EDGAR
NDAQ	Griggs PC Nelson	President, Capital Access Plat	Sale	2024-11-08	5,000	$79.51	$397,550	Disposed (200,821 owned after)	EDGAR
NDAQ	Griggs PC Nelson	President, Capital Access Plat	Sale	2024-11-06	5,742	$77.34	$444,086	Disposed (205,821 owned after)	EDGAR
NDAQ	SKULE JEREMY	Executive Vice President	Sale 10b5-1	2024-11-06	12,000	$77.92	$935,040	Disposed (114,580 owned after)	EDGAR
NDAQ	Tal Cohen	President, Market Platforms	Sale	2024-11-01	6,900	$74.00	$510,600	Disposed (136,826 owned after)	EDGAR
NDAQ	Tal Cohen	President, Market Platforms	Sale	2024-10-31	3,984	$74.31	$296,051	Disposed (143,376 owned after)	EDGAR
NDAQ	Griggs PC Nelson	President, Capital Access Plat	Sale	2024-10-29	4,000	$76.05	$304,200	Disposed (211,563 owned after)	EDGAR
NDAQ	Griggs PC Nelson	President, Capital Access Plat	Sale	2024-10-28	6,000	$75.71	$454,260	Disposed (215,563 owned after)	EDGAR
NDAQ	Peterson Bradley J	Executive Vice President	Sale	2024-10-28	6,817	$75.25	$512,979	Disposed (149,655 owned after)	EDGAR
NDAQ	Peterson Bradley J	Executive Vice President	Sale	2024-10-28	6,825	$75.38	$514,468	Disposed (142,830 owned after)	EDGAR
NDAQ	SKULE JEREMY	Executive Vice President	Award	2024-10-01	6,844	—	—	Acquired (126,580 owned after)	EDGAR

Long US-equity 13F disclosures only · up to 45-day reporting lag · sells = reduce/avoid, not short. JSON: /api/signals · /api/funds · /api/status