Old Second Bancorp, Inc OSBC

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Old Second Bancorp, Inc. - Common Stock · Company · Nasdaq · Financial Services / Banks - Regional

Paper trade (simulated — no real money)

Fill: USD 24.4300 · FX 1 USD = 1.277900 SGD · about SGD 31.2191 per unit

Sign in to practise with simulated trades before investing real money. USD fills are converted into the SGD portfolio at the displayed rate.

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 18.56 → 24.43 · 31.6%
25.91021.79017.670 1 2 3 4 5 6 7 8 9,10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Oct 25Jan 26Apr 26Jul 26Oct 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 24 Oct 2025 — 25 Oct 2026 (Last year)

Daily Nasdaq prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.

Weekend
Weekend
24.4000 24.6600 24.2800 24.4300 927,135
24.5000 24.9500 23.6900 24.7100 829,500
27 · 8-K After-hours · 20:05 ET 8-K ↗
25.1400 25.2400 24.6900 24.8700 432,800
26 · 8-K After market open · 15:00 ET 8-K ↗
24.8400 25.4900 24.8400 25.1000 505,800
25 · 8-K After-hours · 20:15 ET 8-K ↗
24.7800 25.0600 24.7600 24.8400 421,600
Weekend
Weekend
24.9300 25.5000 24.8800 24.8800 763,600
24.7600 25.0600 24.6100 24.8500 546,900
24.4200 24.8000 24.3500 24.6300 591,000
25.0300 25.1300 24.6500 24.8000 664,000
24.6600 25.0600 24.4700 24.8400 588,800
Weekend
Weekend
24.7600 24.8500 24.5400 24.6100 391,800
24.6500 24.9700 24.4600 24.8600 735,700
24.7700 24.8400 24.4500 24.6600 620,300
25.2200 25.3200 24.9500 25.0500 922,400
25.0400 25.0600 24.6600 24.8700 581,500
Weekend
Weekend
24.8200 25.2000 24.7900 24.9500 722,000
24 · 8-K After market open · 15:00 ET 8-K ↗
24.3800 24.6700 23.9900 24.6300 711,100
24.6400 24.8200 24.2900 24.4900 505,100
24.8500 24.9800 24.4400 24.6500 496,000
24.9200 25.0300 24.7600 24.8500 467,700
Weekend
Weekend
24.8600 25.1100 24.8600 24.9500 674,100
24.5500 24.8900 24.4400 24.8200 664,900
24.6600 25.1300 24.4200 24.5500 460,800
24.9800 25.1500 24.6400 24.6500 375,500
25.0800 25.2600 24.8200 24.8300 353,100
Weekend
Weekend
24.8000 25.0700 24.5900 24.9900 731,100
25.1900 25.3400 24.8800 24.9200 428,200
25.4500 25.5300 24.5100 24.9800 558,200
25.5200 25.6800 25.3300 25.5300 486,500
25.5000 25.8400 25.4600 25.5100 472,500
Weekend
Weekend
25.7500 25.8200 25.3300 25.5800 381,400
25.2400 25.5300 25.0000 25.5300 361,600
25.2500 25.5100 25.0800 25.2600 404,000
25.6100 25.7400 25.4300 25.5300 442,000
No trading
Weekend
Weekend
25.5000 25.8300 25.5000 25.7200 429,600
25.6800 25.8500 25.5500 25.6800 476,100
25.1700 25.6800 25.0900 25.5300 517,700
25.1000 25.5400 24.9500 25.0800 443,000
25.1900 25.3600 25.0300 25.0800 415,800
Weekend
Weekend
25.2200 25.3700 25.1500 25.2400 388,800
25.0600 25.2900 24.8900 25.1700 290,300
25.2400 25.3800 25.1100 25.2500 327,600
25.5200 25.5200 25.1800 25.1900 313,000
25.3100 25.6300 25.2900 25.4500 317,200
Weekend
Weekend
25.3900 25.5000 25.0700 25.3400 337,300
24.8900 25.2500 24.7000 25.2000 370,500
25.6400 25.7400 25.0200 25.0400 529,100
23 · S-3ASR After market open · 15:45 ET S-3ASR ↗
25.9300 26.0000 25.6200 25.6600 344,200
25.7800 26.0600 25.7100 25.8300 381,500
Weekend
Weekend
25.8200 25.9500 25.6700 25.9100 338,600
25.8900 26.0100 25.7100 25.8100 426,800
25.4800 25.8400 25.4700 25.8000 324,300
25.3200 25.6200 25.3000 25.4500 371,400
25.3400 25.5600 25.1500 25.2800 395,300
Weekend
Weekend
25.6800 25.7300 25.3300 25.4400 460,700
22 · 10-Q After market open · 12:01 ET 10-Q ↗
25.9900 26.0200 25.6800 25.7800 413,200
25.9500 25.9500 25.7200 25.8900 468,500
25.7200 26.0400 25.5800 25.7900 551,600
25.4800 25.8700 25.4500 25.7800 521,300
Weekend
Weekend
25.1700 25.3500 24.9400 25.2900 336,700
25.3700 25.6000 25.0800 25.3400 343,900
25.0200 25.6700 25.0200 25.2900 539,300
24.7800 25.2300 24.7600 25.2200 515,900
24.3900 24.8300 24.2300 24.7200 651,000
Weekend
Weekend
23.6900 24.2100 23.6200 24.0300 495,000
23.0000 23.5400 22.6000 23.5100 544,000
21 · 8-K After-hours · 16:05 ET 8-K ↗
23.6600 23.6800 23.2700 23.4100 502,500
20 · 8-K After market open · 11:00 ET 8-K ↗
23.4800 23.7200 23.3800 23.6800 472,500
23.6400 23.7100 23.3700 23.6000 506,200
Weekend
Weekend
23.7000 23.8200 23.4900 23.6400 463,900
23.2000 23.9900 23.2000 23.8800 736,400
23.0100 23.4100 22.7500 23.1900 337,800
23.0600 23.3000 22.9100 23.0100 215,900
22.8900 23.1400 22.7600 23.0600 329,700
Weekend
Weekend
22.9200 22.9700 22.7800 22.8900 370,700
22.9600 23.0500 22.8300 22.8500 535,700
19 · 8-K After market open · 11:00 ET 8-K ↗
22.9900 22.9900 22.6000 22.7100 327,200
23.3300 23.3600 22.9700 22.9900 354,400
23.1500 23.5500 23.0500 23.2200 394,900
Weekend
Weekend
No trading
23.7500 23.9500 23.1200 23.2300 246,100
18 · 8-K After market open · 11:00 ET 8-K ↗
23.3300 23.6600 23.2800 23.6200 379,900
23.2100 23.3600 22.9900 23.3200 342,100
23.1300 23.3400 23.0200 23.2100 416,200
Weekend
Weekend
23.0800 23.5500 22.8900 23.3800 1,482,300
17 · 8-K After market open · 11:00 ET 8-K ↗
22.7900 23.0800 22.7500 23.0200 392,300
22.6300 22.9100 22.4300 22.8900 331,100
22.1500 22.6300 21.8300 22.5700 307,300
21.8700 22.2500 21.8600 22.0800 335,600
Weekend
Weekend
No trading
21.9800 22.1700 21.7300 21.8900 557,700
22.0600 22.4500 21.5000 21.6600 435,700
22.1600 22.5300 21.9100 22.0600 361,800
22.5800 22.6700 21.9200 22.0100 441,000
Weekend
Weekend
22.3600 22.5400 22.0800 22.5000 312,000
22.2300 22.4100 21.9400 22.2200 300,500
22.0300 22.2600 21.9000 22.1200 319,100
16 · 8-K After market open · 11:00 ET 8-K ↗
21.8400 22.3000 21.4000 21.9400 251,200
21.6200 21.8800 21.5900 21.7100 177,000
Weekend
Weekend
21.4200 21.7600 21.4200 21.5600 226,800
21.0800 21.5100 20.9800 21.4200 254,600
21.4300 21.4900 20.6800 20.7000 279,200
20.9700 21.4000 20.7400 21.3600 398,100
21.1100 21.2400 20.7600 21.0700 371,100
Weekend
Weekend
21.2900 21.5000 21.0200 21.3200 346,400
21.2300 21.3100 20.9500 21.3000 308,400
21.4800 21.6100 21.1400 21.2300 318,400
21.1400 21.4900 20.8700 21.4900 439,300
No trading
Weekend
Weekend
21.1300 21.4400 21.0300 21.0800 326,700
20.8600 21.0800 20.7900 21.0800 367,300
15 · 8-K After market open · 10:30 ET 8-K ↗
20.8300 21.2000 20.6200 20.9700 441,600
14 · 8-K After market open · 09:50 ET 8-K ↗
20.8200 20.9300 20.5900 20.7900 262,100
20.4700 20.9000 20.4600 20.8200 300,900
Weekend
Weekend
20.6700 20.7200 20.3500 20.4300 364,100
20.8000 21.0600 20.6900 20.7100 279,800
20.7300 20.9700 20.5400 20.6500 402,800
20.9100 20.9900 20.3300 20.8500 372,200
21.3200 21.4200 20.7200 20.8800 510,600
Weekend
Weekend
21.0700 21.3400 21.0700 21.2800 323,700
13 · 10-Q After market open · 15:01 ET 10-Q ↗
21.2100 21.4700 20.6300 21.0800 395,600
21.0900 21.4100 21.0300 21.1700 414,000
20.5600 21.1400 20.4900 20.9600 368,900
20.6700 20.9200 19.9300 20.5000 357,600
Weekend
Weekend
20.5400 20.8200 20.3500 20.7900 328,100
20.3400 20.8300 20.2400 20.6100 357,500
20.7500 20.9300 20.4200 20.5100 362,700
20.5100 20.9800 20.5100 20.9100 512,800
19.9800 20.4100 19.9300 20.3700 436,400
Weekend
Weekend
19.8000 20.0500 19.6500 20.0000 604,900
19.8500 20.9100 19.2500 19.8500 1,070,200
12 · 8-K After-hours · 16:05 ET 8-K ↗
21.4300 21.5000 21.1500 21.2100 329,200
11 · 8-K After market open · 10:30 ET 8-K ↗
21.7400 21.8800 21.3200 21.3700 264,500
21.8400 22.0900 21.7800 21.7900 251,200
Weekend
Weekend
21.8300 22.4300 21.6500 21.9300 511,400
21.5900 21.8000 21.5100 21.5700 755,300
21.5700 21.8000 21.4100 21.6700 434,600
21.4300 21.7200 21.1000 21.6100 404,100
21.2400 21.5500 21.1000 21.5300 346,800
Weekend
Weekend
21.5100 21.5100 21.1800 21.3100 405,800
21.1400 21.6400 21.0900 21.4700 627,700
21.2500 21.6000 21.0500 21.1900 608,300
20.5100 20.9700 20.4000 20.9400 318,000
10 · DEFA14A After market open · 11:17 ET DEFA14A ↗ 9 · DEF 14A After market open · 11:15 ET DEF 14A ↗
20.6500 20.8900 20.5800 20.7600 277,600
Weekend
Weekend
No trading
20.1300 20.8000 20.0900 20.7400 317,300
8 · 8-K After market open · 11:00 ET 8-K ↗
20.2100 20.6500 20.2100 20.4500 288,700
20.1400 20.2700 19.9000 20.1600 302,200
19.7100 19.8900 19.6400 19.8500 301,000
Weekend
Weekend
19.6900 19.7700 19.4300 19.5700 267,900
19.4900 19.8200 19.4100 19.7000 325,300
19.8700 20.0900 19.4500 19.6100 463,900
19.4900 20.0300 19.4900 19.7400 412,100
19.8700 20.1000 19.6600 19.6800 673,800
Weekend
Weekend
19.5800 19.7600 19.3400 19.4500 724,100
19.1600 19.7100 19.1400 19.5800 407,600
19.3500 19.5200 19.2300 19.2800 430,300
19.8000 20.0000 19.4600 19.5500 310,400
19.6600 19.7800 19.5800 19.6100 246,700
Weekend
Weekend
19.7100 19.9000 19.3300 19.4800 367,500
19.1000 19.6100 19.0800 19.5600 306,900
19.4200 19.7200 19.3900 19.4800 426,400
19.5100 20.0600 19.4900 19.6300 369,600
19.2000 19.7600 18.9100 19.6200 707,000
Weekend
Weekend
19.1500 19.7800 19.0000 19.5500 407,600
19.8200 20.0900 19.5200 19.7200 412,000
7 · 8-K After market open · 11:30 ET 8-K ↗
20.0000 20.1900 19.5600 20.0500 278,800
19.3900 19.9900 19.3800 19.9000 313,100
19.2600 20.1000 19.1500 19.9100 512,900
Weekend
Weekend
19.6100 19.9500 19.4200 19.6300 555,400
6 · 10-K After market open · 14:30 ET 10-K ↗
20.3200 20.5800 19.9600 20.2200 323,600
19.9700 20.3800 19.8500 20.3200 174,300
19.5300 19.8600 19.5200 19.7900 386,900
20.6000 20.7300 19.4100 19.5600 307,700
Weekend
Weekend
20.4000 20.6300 20.1500 20.5700 386,100
20.3600 20.5300 20.1400 20.3700 261,700
20.7400 21.1400 20.5000 20.5400 343,700
20.6300 20.9600 20.5700 20.8300 217,400
No trading
Weekend
Weekend
20.3900 20.7700 20.2000 20.5700 208,700
20.6000 20.6800 20.1500 20.4600 335,800
20.7400 21.0000 20.3700 20.4000 239,600
21.0500 21.2700 20.4900 20.6400 426,200
20.9400 21.3300 20.6000 21.1100 349,900
Weekend
Weekend
20.9300 21.0700 20.8000 21.0400 360,400
20.7500 21.0000 20.4500 20.6600 381,000
20.6700 21.0700 20.6700 20.7800 283,600
20.1700 20.7900 20.0200 20.5200 367,000
19.8800 20.4600 19.7100 20.2400 331,600
Weekend
Weekend
19.8100 20.0500 19.6300 19.8400 376,000
5 · 8-K After market open · 12:30 ET 8-K ↗
19.5700 19.9800 19.4400 19.9800 362,600
20.0100 20.0100 19.4100 19.5100 374,600
20.0000 20.0500 19.6500 19.8200 287,800
19.8300 20.2500 18.9500 19.8800 483,000
Weekend
Weekend
21.0800 21.0800 19.8600 19.9000 621,100
21.8000 22.0000 21.0700 21.2600 476,900
4 · 8-K After-hours · 16:05 ET 8-K ↗
20.4700 21.5100 20.4700 21.4700 560,900
3 · 8-K After market open · 11:30 ET 8-K ↗
20.4000 20.7000 20.3000 20.3700 242,300
No trading
Weekend
Weekend
20.8900 21.1000 20.2100 20.6600 504,500
20.4500 21.1000 20.4500 20.9900 367,200
19.8500 20.5600 19.7000 20.4600 488,000
19.7400 20.1300 19.4800 19.8700 602,500
19.5900 19.8400 19.4600 19.7300 260,000
Weekend
Weekend
20.3100 20.3700 19.7500 19.7800 240,700
19.6300 20.5500 19.6300 20.2700 350,500
19.9100 20.0200 19.5200 19.7400 231,200
19.9000 19.9800 19.7600 19.8800 252,100
19.3500 20.2800 19.3500 20.0200 294,600
Weekend
Weekend
2 · 8-K After market open · 14:15 ET 8-K ↗
19.4600 19.6600 19.1900 19.4800 250,200
No trading
19.5300 19.5800 19.4200 19.5000 182,700
19.7900 19.7900 19.5100 19.5300 246,800
19.9600 20.0000 19.7800 19.7900 223,300
Weekend
Weekend
20.1500 20.6000 19.8200 19.9000 183,000
No trading
20.1500 20.2100 20.0900 20.1300 80,300
20.4100 20.5400 20.1600 20.1800 176,100
20.5600 20.7000 20.4000 20.5200 179,700
Weekend
Weekend
20.7400 20.9600 20.4100 20.5300 611,300
20.8100 20.9400 20.5000 20.8500 294,400
20.7600 20.9600 20.5600 20.6500 316,400
20.6900 20.8800 20.5700 20.7800 251,800
20.5500 20.7100 20.5000 20.6400 251,100
Weekend
Weekend
20.7600 20.7600 20.4100 20.5100 262,900
20.3200 20.7100 20.3200 20.6300 293,500
19.7600 20.5200 19.7100 20.4100 386,000
19.8200 20.1400 19.7500 19.8000 259,900
19.7000 19.9100 19.5100 19.8000 272,800
Weekend
Weekend
19.5400 19.6500 19.4900 19.6200 201,200
19.4000 19.7500 19.3800 19.6300 313,700
19.0000 19.5300 18.8800 19.4900 441,800
19.1500 19.1500 18.9000 18.9300 295,800
18.7500 19.1300 18.7500 19.0200 296,900
Weekend
Weekend
19.0200 19.0400 18.7800 18.8500 133,500
No trading
18.9300 19.1700 18.8900 19.0200 328,900
18.5300 19.0900 18.2500 19.0000 256,700
18.5000 18.6000 17.8700 18.4200 355,800
Weekend
Weekend
18.0200 18.6900 18.0200 18.5200 366,000
18.2400 18.4900 17.9000 17.9500 198,000
17.8500 18.1200 17.7900 18.0500 238,400
17.6700 18.0300 17.6100 17.8500 242,200
18.3900 18.4300 17.6500 17.6700 204,400
Weekend
Weekend
18.2800 18.4700 18.1100 18.4400 286,000
18.3100 18.5900 18.1900 18.3400 265,400
18.4200 18.7100 18.3300 18.3800 510,100
18.4600 18.6100 18.3300 18.4300 236,500
18.3700 18.5500 18.1800 18.4200 322,800
Weekend
Weekend
18.2200 18.3600 18.0100 18.3200 361,600
1 · 10-Q After-hours · 16:13 ET 10-Q ↗
18.3500 18.4800 18.0500 18.2000 284,000
18.0100 18.4400 17.9900 18.3900 330,500
17.8900 18.2000 17.7400 18.0900 408,500
17.8400 18.0000 17.6600 18.0000 294,500
Weekend
Weekend
17.9600 18.0700 17.5400 17.9500 396,800
18.2900 18.5700 18.1000 18.1600 394,500
18.5200 18.7000 17.1100 18.3300 391,300
18.5200 18.7000 18.3300 18.6100 477,900
18.6000 18.7500 18.4800 18.5800 673,800
Weekend
Weekend
18.3300 18.6000 18.1000 18.5600 744,400

Announcement Events

Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.

27 8-K 8-K (opens SEC filing in a new tab) After-hours · 20:05 ET Summarise
26 8-K 8-K (opens SEC filing in a new tab) After market open · 15:00 ET Summarise
25 8-K 8-K (opens SEC filing in a new tab) After-hours · 20:15 ET Summarise
24 8-K 8-K (opens SEC filing in a new tab) After market open · 15:00 ET Summarise
23 S-3ASR S-3ASR (opens SEC filing in a new tab) After market open · 15:45 ET Summarise
22 10-Q 10-Q (opens SEC filing in a new tab) After market open · 12:01 ET Summarise
21 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
20 8-K 8-K (opens SEC filing in a new tab) After market open · 11:00 ET Summarise
19 8-K 8-K (opens SEC filing in a new tab) After market open · 11:00 ET Summarise
18 8-K 8-K (opens SEC filing in a new tab) After market open · 11:00 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) After market open · 11:00 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) After market open · 11:00 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) After market open · 10:30 ET Summarise
14 8-K 8-K (opens SEC filing in a new tab) After market open · 09:50 ET Summarise
13 10-Q 10-Q (opens SEC filing in a new tab) After market open · 15:01 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) After market open · 10:30 ET Summarise
10 DEFA14A DEFA14A (opens SEC filing in a new tab) After market open · 11:17 ET Summarise
9 DEF 14A DEF 14A (opens SEC filing in a new tab) After market open · 11:15 ET Summarise
8 8-K 8-K (opens SEC filing in a new tab) After market open · 11:00 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) After market open · 11:30 ET Summarise
6 10-K 10-K (opens SEC filing in a new tab) After market open · 14:30 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) After market open · 12:30 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) After market open · 11:30 ET Summarise
2 8-K 8-K (opens SEC filing in a new tab) After market open · 14:15 ET Summarise
1 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:13 ET Summarise